SCIENTIFIC ABSTRACT SHUYKIN, N.I. - SHUYKIN, N.I.

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SCIENTIFIC ABSTRACT
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Thermal Isomerization of 2-Yiethyl-4.5-dihydrofuran to SOY/20-125-5-27/61 Methyl-cyclopropyl Ketone ASSOCIATION% Institut, organicheskoy khimii im. N. D. Zelinakago Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinskiy of the Academy of Sciences,USSR) SUBMITTED: February 5, 1959 Card 3/3 5(2). AUTHORS: TimofeyeviL, le. A., 4h4,y -6-2-1161 SOV120-125 Corresponding Member, AS USSR, Plotnikov, Yu. N., Kleymenova, V. M. TITLE: Dehydrogenation of n-Hexane on an Aluminochromium Catalyst (Degidrogenizatsiya n-geksana na alyumokhromovom katalizatore) PERIODICAL: Doklady Akademii nauk SSSR, 1959, Vol 125, Nr 6, pp 1272-1274 (USSR) ABSTRACT: A survey of publications on the reaction mentioned in the title (Refs 1-2) shows that neither the instructions concerning the reaction nor the yield of hexenes nor the formation of aromatic hydrocarbons under the given conditions have been hitherto discussed. Papers on the afore-mentioned reaction on oxide catalysts lack. Further references follow (3-6). Table 1 shows the data given in the publications concerning the reaction mentioned in the title in the presence of chromium and with the aromatization of n-heptane. This shows that catalyzates have hitherto been obtained by various research workers which contained considerably less unsaturated hydrocarbons than aromatic ones, On the strength of their investigations carried out in the last Card 1/3 years the authors drew the conclusion that it is possible to Dehydrogenation of n-Hexane on an Aluminochromium SOV/20-125-6-27/61 Catalyst change considerably the ratios of the yields of the two afore- mentioned hydrocarbon typesv i.e. from 0-14 to 2.11 by changing the production of the catalysts mentioned in the title, furthermore, by the introduction of oxides of alkali metals, finally by changing the instructions concerning the reaction. The catalyst without alkaline additions was the best of all catalysts investigated, as far as the maximum yields of unsatura- ted hydrocarbons are concerned. It was produced by the saturation of aluminum oxide with ammonium bichromate solution. Unsaturated hydrocarbons with a yield of 2(rja' and not more than 14L benzene were obtained from n-hexane at 5000 and a rate of passage of 0-5 h- 1. It was the authors' object to suppress the aromatization even more in this investigation. All factors were investigated for this purpose: temperature, rate of passage, and individual parts of the catalyzate were analyzed etc. Table 2 and figure 1 show the results. The gas produced by the trans- formations of n-hexane at 475 and 5000 contained 90.6-95-31,~r hydrogen, up to 1.8 unsaturated hydrocarbons, and 2.7-7.5% alkanes. The temperature rise within the afore-mentioned range Card 2/3 increases the yield of hexenes only by 21i'~, that of benzene, Dehydrogenation of n-Hexane on an Aluminochromium SOV/20-125-6-27/61 Catalyst however, by 9-13114. Thus, it was found that the dehydrocycliza- tion of n-hexane practically does not take place under the given conditions, whereas hezenes are produced in rather con- siderable quantities. The result is of general importance since the authors succeeded in suppressing the aromatization of an n-alkane which is capable of immediate dehydrocyclization in the presence of an aluminochromium catalyst. The dehydrogena- tion of n-hexane is rather considerable. There are 1 figure, 2 tables, and 8 references, 6 of which are Soviet. ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinakiy of the Academy of Sciences USSR) SUBMITTED: January 30, 1959 Card 3/3 5 (3) AUTHORS: Correspondinj 1.,em,.ber SOV/2C-126-1-28/-6-22 AS USSR, Bekau..ri, if. G. TITLE: Catalytic Pol~,cjcli~.at4on of Hicher Alkanes (Kataliticheskaya politsikli-,atsiya vysshikh alkanov) PERIODICAL: Doklady A%Mdemii nauk SSSR, 1959, Vol 126, lir 1, Pv 103 - 106 (USSR) ABSTRACT: A _i~roup of scientists detectad at the same time (Refs 1-3) the of the catalytic dehydrocyclization of alkanes vi %I hich have a chain of carb~,r. atoms in "he moieczzle (not less than 6). This reaction was in7estiGated mainly in the case of hydrocar- bc~ns ,f simplv composition. The-, Cave as final yiel-I b-anzene , tolu(--rie, and xyl,=_-:,3. Acc3rdin,~- to the mult plet thecry of A. A. Balandin and othei- theorie,3 it could, however, be expect- ed, that hiCher alkares of normal structure (bejinnin- with -the n-decane) are bound to yield cn.-idensed systema of raphtlialene, phenan-threne, and still more complicated pulycyoles under con- ditions which favor dehydrocyclization, This is in fact the case (Ref 4) (see scheme). a-Naphthalcnes can be partly or completely isomeriz:!d into tho il-form in this reactizn. This Card 1/4 formaticn is, however, possible with an intermediate stage of Catalytic PoljcWcliz~~tt,.n LN.Elit,r A-J_Rnc-3 SCV/20--l 2(;--: --29162 a sabstftot,~,-d benze-c With a E,it-sequent closing of the side chain (sr-O U.-heTf~'). This As ba3ed upon a provious paper of the fl-rst a-,thor (Ref 5, s2e coheme). In the present paper trans fox-1--A' ..J,ons c;f n-heptadecana and n-cctodeacana were in- vestigated Ir. -the pra3erce of 0.5Fpf platinum preii.1-itated or. alumirniml zxid.o and on 11guribri-a" (bleaching earth), or palla- dium prcc!piltatid a' alr~rG ': and a hydro.-en pressure of 30 atm (Ref C. Thc~ i.-t-al alkanes were inolated from the fraotion '* c 190-350 f -,c,.e Sok.,;'jovogorskaya and Mirzaar-skaya petroleum (Ref 7) and cieered. 8 liquid catalyzates -srere cb- tained aE 41~e ressall. of the experiments wh-ch were tho--ughly inventigatel accordIng- t-o an earlier deso-ribed (Ref 4) =ethod. Vies,.- catalyzatr.is kicatained prz~ducts of the polymer-- zation, of hydro,:-raf,.!,~ing, and, z~f the dehydrceyclization of the Initial alkanee. Af4.4.0 Et t;pajj fraction which boils cut up to '1000has beer- distill~,d off, L_-omatiz: hycirocarbons were isolated from the rest of the Intli-vidual oatalyzates by mears of the chro- mat n,-rL-.ph.-*Lc- rElisorptior. on silica gel cf the type ASM. By mzans 0 f 0- f,.rther fracti...natinjx in. a r.-Itrocen atmrsphere a greater content of -Iuxn,~, ind' -,c -la ir -1 p--ati-,Uln WaS o'htai-.ed Card 2/4 1167~~Tbr nell ;vhich ~,ut --_-P tc 1500. Therefore, Catalytic Polycy,~Iizstisn e-f SOVI,2r,-! 26--,, -23162 I(gumbi,-J-:-u-" 1'.9 i72)le ti aroma t4 Z-1 -1J J. .LDn reacti-Dns. Figure sh~)WG tht, propea7ticc C!f hydrocarbons boil abcove 15(j'--. They lq,*-,.,c- a .)Iue--~:rveen fluorescence. The mixtLre mas 6 zones respectively by ultra-,--*,;;I*t i.'Lum,-*- natlo!. a nf ~Ufferent intensity ~-:.nd --olicr (via-ve of the spect-ra showid that the frantic-, i1 ~Y`.r ss -1:1 is 4-q this ccmnecton most aimilar ~m) and -.Is homolog-uae. The spectn2m cf the fractic.- 17 'Fi-s 1:2 curelvo) J.-- similar to that ti-f a-:,..ethyl- -n-aph-thal.-n-- (F~L-3 1 :.1 car--f-re), alt!i,)---,gh the two spectra lid not Thiw alk.71 0--c-n7tn'.11rene3 witt, the side groups C - C 3 4 ax-'st 4r. t j,_ Tj ey rapi-tasent probably a. mixture of Th - 4 ph,=anthrenes with a admixture (see scl.-,eime) Th,~ continued. There are 1 figure, 1 and 7 S"viet, r9ferences. Card 3/4 ~Catllalytic Polycyclization of Higher Alkares SOV/20..126-1,-28/62 ASSOCIATION: Institut oi-ganicheskoy khimii iv.. N. D. Zelinskogo Alcademii nauk SSSR (Institute of Organic Chemistry imeri N. D. Zelinskiy of the Academy of Sciences,USSR). Institit khimll im. P. G. Melikish-rili Akalemii nauk GruzSSR (Instultute of Chemistry kmer.'. P. G. Molikishvili. of the Academy of Sciences, Gruzinskaya SSR) SUBMITTED: February 21, 11059 Card 4/4 50) AUTHORS: Bellskiy, I. F., Sh SOV/20-127-1-23/65 Corresponding Member, AS USSR TITLE: Catalytic Isomerization of S-Oxides (Tetrahydropyrans) to Aliphatic Carbonyl Compounds (Kataliticheskaya izomerizatsiya ~T-okisey (tetragidropiranov) v alifaticheskiye karbonillnyye soyedineniya) PERIODICAL': Doklady Akademii nauk SSSRI 19599 Vol 127, Nr 1, pp 91-92 (USSR) ABSTRACT:: Hitherto it has been assumed that the I- and &-oxides cannot be isomerized by the opening of the ring to the compounds men- tioned in the title, in contrast to the a-oxides. The authors proved, however, (Ref 1) that this is possible as well in the case of the d-oxides (tetrahydrofuran and its homologs) iD the vapor phase on platinized charcoal at 2500. They are transformed mainly into aliphatic ketones. The reaction of the &-oxides mentioned in the title could be carried out as well with an alkyl substituent in an a-position at 300-3500, as was ex- pected. The corresponding aliphatic ketones (vield 70-80 %) and alkahes (20-30 %.) are formed also in this case (see Scheme). Card 1/2 This speaks in favor of the fact that the isomerization of Catalytic Isomerization of 6-oxides (Tetrahvdro- SOV/20-127-1-23/65 pyrans) to Aliphatic Carbonyl Compounds a-..&Ikyl-tetrahydropyrans-,proceeds like in the case of the y-oxides, mainly by the opening of the ring of the C-0 bond which is farthest away from the alkj1 substituent (bond 1-6). The reaction proceeds as smoothly as that of the y-oxides; the reaction products are the same. An analogy with the y-oxides exists with respect to the easiness of opening (raskrytiye) of the ring as well. The transformation degree of the d-oxides into ketone and aldehydes was higher than that of the y-oxides (50-60 % per passage over the catalyst)9 since their isomerization was carried out at a higher temperature. There are 2 references, 1 of which is Soviet. ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute of organic Chemistry imeni ff. D. Zelinskiy of the Academy of Sciences, USSR) SUBMITTED: April 18, 1959 Card 2/2 5. (3) ' AUTHORS- Shuykin~ N. I., Corresponding Member SOV/20-127-2-34/70 AS USSR,-Bell'skiy, I. P. TITLE: Hydrogenolysis of Carbonyl-containing -Furan Conpounds. Trans- formation of Alkyl-acyl-furans Into Six-membered Carbocyclic Compounds PERIODICAL: Doklady Akademii nauk SSSH, 1959, Vol 127, Nr 2, PP 359-361 (USSR) ABSTRACT: The direction of the hydrogenolysie of the furan ring depends on various factors, in the first place on'the nature of the catalyst and on the properties of the lateral substitutents (Refs 1-5)- Strict conclusions on the influence of the latter on the mentioned direction of the ring cleavage are possible only on the strength of the comparison of experimental results obtained under equal conditions of phase state and pressure. In a previous paper (Ref 5) the authors found a ring aperture in the ctralkyl-furaus on Pt-C only at the C-O-bond at normal pressure which is not adjacent to the alkyl radical. Aliphatic ketones are formed here. In the present paper the hydration reaction of pyromucic acid- methyl-ester and 2-methyl-5-acetyl-furan was investigated under conditions completely analogous to the last mentioned ones. In Card 1/3 this case the carbonyl-containing groups influence decisively HydrogenolysiB of Carbonyl-containing Furan Compounds. SOV/20-127-2-34/70 Transformation of Alkyl-acyl-furans Into Six-membered Carbocyclic Compounds the direction of the aperture of the furan ring. The effect of these groups is opposed to that of the alk-y1 radical. The hydro- genolysis mentioned in the title proceeds in all substances investigated easily and only at the C-0-bond adjacent to carbonyl-containing groups. The primary products produced by this are subjected to further changes in the vapor phase under the hydration conditions. This hydration is interesting not only from the theoretical point of view, but also opens new ways of catalytic synthesis of valuable compounds on the iurfurol base. The mentioned ester forms methyl butyrate with a yield of 35 % in the hydration on Pt-C at 2750. This is a decarbonylization product of the esters of the corresponding aldehyde acid produced meanwhile (see Scheme)- 3-methyl-cyclohexanone, 3-methyl- cyclohexanol as well as metacresol are produced as main products from 2-mothyl-5-acetyl-furan under the mentioned hydration conditions. This formation of carbocyclic compounds is based upon profound structural changes in the molecule of this heterocyclic ketone (2-methyl-5-acetyl-furan) and is certainly a result of several subsequent reactions (see Scheme). Thus a Card 2/3 hydro.-enolysis of the furan ring at the-C-0-bond adjacent to the Hydrogenolysis of Carbonyl-containing Faran Compounds. SOY/20-127-2-34/70 Transformation of Alkyl-acyl-furans Into Six-membered Carbocyclic Compounds carbonyl oroup proceeds first on Pt-C (iii contrast to Xi catalysts). This leads to the formation of carbocyclic compounds. A primary reduction of the carbonyl group in 2-methyl-5-acetyl- furan takes as well place on Pt-C, however, to a much lower extent than on Ni catalysts. An immediate transformation of I into IV and V (see Scheme) has obviously a general importance and may serve as a catalytic synthesis method of the alkyl- cyclohexanones and alkyl-phenols from 2-alkyl-5-acyl-furans. Finally the hydration apparatus, the reaction conditions, ana the 1tv- sical owstaats of the obtained substances are described. There are 6 references, 3 of which are Soviet. ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinskiy of the Academy of Sciences, USSR) SUBMITTED: April 18, 1959 Card 3/3 - / / 3) -1-24 0 / , .'7 j ~ AS USS_7~, -T;Cl I _`~i F I 7-L E': Isr mor.i z, .1 on ~jf r-0-TiC.Is [0 A7 ip, al, :~UT1,C-11YI C':-;FP0UrdS. Zffo,~ t of t1c~ Tr~mpe fa 1.ur.,3 an', St - -o f The se Ci~mj.,our.,1 s PERIODICAL. Doklady Akademii nauk SSSR,19599vol 127, Nr 4,PP 815-817 (USSR) A:3 3 iC 2 T,7"_11. probl-ms arn this articie: (1) 7i.,'hat is the aotion sed 'oy 'he 'anatli of Vhn --_erb~;n chain of tl-,L, all-Y1 pla~,-ecl n M-posit` or. on the rapas` fy o tl 0 tetrahydrof uran L. _L D oy3le to isovnerir~e, DceL-; this action -roceod in ti.0 I ls ;Ji ttInS c-' 5-b-2--i-I), or in t'_p diroction II 'ttin- . 2-1~o-ad, Scheme)? (2) is the effect of temperature of the 1 . on the Tolat Lve capaci ty of 'he I 5-bouds to to sfl- t .1 -11-1 1~,ot-raliydrofurans ? (7) How dGes Ly the of 06-;, f 2 tetrahydrofurans develop, 4dcli atiol~ 0 5 possess al':~-l radica1s witl-, numbers of carbon ator-le ? (4) W11-1t, is t-1-.e direction in .,hic'L 'Llo isomerization of 2,2-dialkyl tetrahydrofuraiis takes pl,aco ? Table 1 shows i.,Xpe-rimell"al resuIts. S 0 1 u + ~` 0 P_ S : (1) The isomqrlzatlon of and CG_n_L__1,[.jyj tetrah;(d2~o:rurarj. was mider eclual conditions in the vaFor phase on platinized coal at 350c. I indicates of r-Oxidos to Aliphahic Carbonyl 30V/20-1 ?7-4-24/6o Effect of .-Le Temperature and Structure of These Compounds A. that the increasinG. number of carbon atoms in tLe oide chain of a6-alkyl tetrahydrofurans increases the capacity of the C-0 bond fo be split in the cycle i some -~izatio n. On the other hand, the tendency of the C-0 bond 1,1r towards splitting decreases. The yields of the isomerization products are Civen. In this case, a pronounced dependence of tl-~e capacity of the tetrah-Ydrofuran cycle to ioomerize on the length of the alkyl side r~~--dical is noticeable in direction I or 11. (2) This problem was solved by results obtained from the isomeriZation of ot-n-propyl tetrahydro- furan at 250, 350, -and 4000. The relative quantities of n-hexane and dipropyl ketone show an orientation of the isomerization of Me tPtrah%drofuran cycle on the C-0 1,2- and 1,5-bond in y dependence on temperature. Table 1 further shows that the re7a"ive capacity to iscj,-..ierize under the action of the ring s,rlittinC at t1le C-0 bon,1 in the vicinity of the alkyl radical i!-creases ,.-ith ris4ng tern...Verature. (3) In so far as the difference of the C-0 bords 1,2 and 1,5 in their capacity to be split by the i2ow-rization of thle substituted tettra-hyd-rofuran ring depends on thc lencth of the tM:yl radlical ir. oC-position, it mi-ay be exrected th-at this dif forence also oxists in tetra- Card 2113 '-.ydrofurans containiw- various raimbers off' C-atoms. -as of r-Oxiil..~s to Alipl-,-Ltic Carbor-3-1 S~,1,7/2)0- 1 ?7- 24 /60 Co m -~o unds -T-S-f-~ " o-f' t"-'e r a. ture -.in r! Zt:!-ljc t ure of Coq.,,ounds L -r In ne fso_-:,~-r~zation of diallkyl tet .Lurans contaird-in- both alkyl ~--adicals i. a o n one a nd thc~ sa-me C-a"-rri, I.'-.e rinds aye al-says 2pl-*;.t at the C-0 borld 4- which is adlja-cont tq th,~ al',yi side radical. If cr t h . I Ij JL - ,.~ c; a I:a-~ ii t -~ Leantime, this (i r1bonylization of tilic.- aitlehyde for , c1 i -h leads to t1ne '.rmatio;- of aliphat-It. hydrocarlociis. ure table and r-,~!,,rnnces, -' of which nr.-- 3cvict. ILIZtitUt - ` , zi .- - SO,- 1 11 c 1! , S, -- 0h ~L m i i ; u . ~, . D . , ~~ 1 i 11 S! -. 0 g c M" a (I C- 1, na 1"'k. SSS-1 Irstitulc. of Cr~~:inic Chcm-istr'-, imen! D. --jllLijsl:-iY Of the 3~-iencez, uss-) SUBMITTED: Card 31 171 00 66169 SOV/20-12-8-5-22/67 AUTHORS- Bellskiy, I. F., Shuykin, N. I., Corresponding Hernber, AS USSR TITLh: A New Method for the Synthesis of Tetrahycirofuran Homologs PERIOLICALt Doklady Akademii nauk 55SR, 1959, Vol 128, Nr 5, PP 9,,5-947 (USSR) A.BSTa-.:,CT: The authors recall the niethods used so far for the above syn- thesis (Refs 1-3). The new method worked out by the qathcrs is described. It is based on a direct transformation of 1-furyl- alkanols-3 into tetrahydrofurans of varying structure. This de- pends on intermediate formation of 1,4-diols due to hydrogeno- lysis of the furan cycle in the molecule of the 1-furyl-alkanols-3. In hydrogenation in the vapor phase 1,4-diols are easily cyclized. They separate water and form corresponding tetrahydrofarans. Two cases are to be discussed %ith regard to the possibility of synthesizing various homologs (mentioned in the title) due to furfarol and aliphatic ketones: 1) Condensation of furfurol with methylalkyl ketones. 2-n-proPYl-5-alkyl-tetrahydrofurans (III) are formed (see Diagram). 2) Condensation of furfurol with ketones of the type R-CH 2-1 -CH 2-R. 2-n-propyl-4,5-dialkyl-tetra- 0 Card 1/3 hydrofurans (VI) are formed ( see Diagram). The reaction LK 66169 A New I'lethod. for the Synthesis of Tetrahydrofuran S107/20-128-5-22/67 Homolo.as mechanism mentioned above is proved by the structure of di- and trialkyl-tetrahydrofurans for;aed by hydrogenation of 1-furyl-alkanols-3-in the vapor phase. This is a peculiar case of hydrogenolysis of the furan cycle and of simultaneous closure of the new tetrahydrofuran cycle by carbon atoms, three of them having formed a side chain in the initial substance. This fact offers many possibilities of Wnthesizing various homologs of tetrahydrofuran since the side chain may vary ini dependence on the str-.cture of the carbonyl-containing grou ~W . a P of the furan compound as well as the structure of the alipha- tic ketone. The structure of this s-:*dc chain of 1-furyl-al- kanols-3 is decisive for the structure of the new substituted tetrahYdrofuran cycle being formed. Hydrogenolysis of the furan cycle readily proceeds on various catalysts containing -,etals of group VIII, e.g. on Pt-C and skeleton Ni-Zn, as well as on a skeleton Cu-Al catalyst. The most important side reactions on Pt-C are: a) isomerization of the homologs of t,Arahydrofaran to aliphatic ketones (Ref 4). b) Formation of lo4-dions. c) Hydrogenation of 1-furyl-allkanols-3 to 1- lard 2/3 tetra'iydrofaryl-.alkanols-3. The authors obtained farfurylidene- 41-- 1 66169 A New :4ethod for the Synthesis of Tetrahydrofuran SOV/20-128-5-22/67 Homologs A methyl-alkyl-ketones (I) by condensation of furfurol with acetone, methylethyl ketone, and methyl-propyl ketone in the presence of an NaOH solution. The yield was 70-M4- Conden- sation with diethylketone was less satisfactory: only 50-55% of the corresponding furfurylidene ketone (IV) was formed. Hydrogenation of the latter substances to 1-furyl-alkanols-3 (II,V) gave a yield of up to 95~6- Four of these substances are mentioned together with their constants. There are 4 ref- erences, 3 of which are Soviet. ASSOCIATION: Institat organicheskoy khimii im. 11. D. Zelinskogo Akademii nauk SSSR (Institute of Or,,anic Chemistry.. imeni N. D. Ze- linskiy of the Academy of Sciences, USSR) SuB!.:ITTED: June 25, 1959 Card 3/3 6648F '3 3 0 SOY/20-129-1-35/64 AUTHORS: Timofeyevaq Ye. A., Shuykinq N.I., Corresponding Member AS USSR9 Plotnikovq Yu. No, Ki-e-i ienova~q. ~. TITLE: Dehydrogenation of n-Nonane on an Aluminum-Chromium Catalyst PERIODICAL: Doklady Akademii nauk SSSRj 1959t Vol 129v Nr It pp 128-130 (USSR) ABSTRACT: In connection with previous investigations (Refs 1, 2) the authors wanted to dehydrogenate n-alkanes with higher molecular weight on the catalyst mentioned in the title. Data from publications are very scarce (Ref 3). The investigations were carried out at various temperatures and volume rates. The method described earlier (Ref 2) was applied. The gas formed due to reaction contained 92-97% hydrogen, 1-5- 3-5% unsaturated and 1-0- 4-5% saturated hydrocarbons. Table I and figure I show the results. Table I shows that with a volume rate of 2.1 h-1 the olefin content is increased from 8% to not more than 14-15% if the temperature increases from 400 to 4750. At the same time the content of aromatic hydrocarbons increases considerablyq namely from traces to 15-16%. Thus a temperature of 4000 is optimum with Card 1/2 regard to the selective reaction progress of dehydrogenation. 11K MINACHEV, Kh.M.; SHUYKIN, N.I.; MARKOV, M.A. Effect of the specific surface area of platiniwd aluminosilicate on the degree of n.nonar-q conversions. Report No.2: Change in the catalytic activity of platinized ablyninosilicate in the course of the carrier treatment by water vapors. Izv.AN S&W Otd. khim.nauk no.8:11+66-11+70 Ag 160. (MIR& 15:5) 1. Institut organicheskoy kbimii im. N.D.Zelinskogo AN SSSR. (Honane) (Aluminosilicates) (Catalysis) :1 -Ma 72 -0;0 Z.;AM s V .3 'Jim 14 0 d Jim, 1 0.4 t PdAJi I BOOK WLADITATICS SOV/49111 Nezhvuzovskoye 910VOSAChanlye p0 khImll nefti. Moscow, 1956. Sbornik trudQv M4zhvuzovskogo saveszenanlyl po ~;hlmll nerti (Collection of Transactions of t." Inter-Univer3ity Con- ference on Petroleum CnemIstry) [Moscow) Izd-vo Moak. univ., 1960. 313 P. Errata slip Inserted. 1,6Go copies printed. organizing ccmaittea or the Conference: Chalman: B. A. Uzanskly, Academician., Vlce-Chairozm: S. 1. Khromov, D"ent; 0. M. Panchankov. Professor, A, P. flat*. Pro- fessor; Secretary. Te. S. BalenkovA~ Scientific Workdr. 141torial Board: Reap. Ed.: A. P. ?!are; 1. V. Goatun- okay&. I. R. Tits-Skvorta,;v4, L. A. FrIvanskaya. PURPOSE, This collection of articlea Is Intended Car the teaching atarr or universities and schools or higher ad. ucati on training specialists for the petroleum anti patrol- Anua-rerIning industries. Card 1/7 COVERAaz; The collection Includes articles dealing with the present state of the petroleum industry. the scientific research problems In petroleum chemistryo the chemistry or petroleum. the COCIP031tion or petroleum and petroleum products, the sciontirle principles of refining petroleum Into motor rueln and lubricants, and the manufacture of synthetic products from hydrociurbon gists and petroleum. One article discusses the affect of chemical composition and additives an fuel combustion In jet engines. The ma- toriAl Was presented at the In:*r-UnIversity Conference on Patrol*um Chemistry, he Id at tne Moscow State Universi- ty Imeni M. V. 14monosov November 26-25-. 19~,,Q. No person- &LItlea are mentioned. References accompany most of the articles. ?ABLt UP CONTIMSs Non* given The Authors and the titles of articles A" as follows: Xntrodu4tion by B. A. Kazanskly, Academician Card 2/7 S/595/60/ooo/ooo/oll/014 E040/E435 AUTHORS: Shuykin, N.I., Naryshkina, T.I. TITLE: Catalytic synthesis of cyclopentadiene series of hydrocarbons SOURCE: Vsesoyuznoye soveshcbaniye po khimicheskoy pererabotke neftyanykh uglevodorodov v poluprodukty dlya sinteza volokon i plasticheski-kh mass. Baku, 1957 Baku, Izd-vo AN Azerb, SSR, 196o. 249-259 TEXT: In view of the importance of hydrocarbons of the cyclo- pentadiene series because of their high reactivity, the present authors studied their production 1) by catalytic dehydrocyclization of diolefinic hydrocarbons and 2) by catalytic dehydrogenation of five-member cyclanes into cyclenes. The optimum dehydrocyclization conditions for piperylene were found to be at 6000C under reduced pressure (20 to 25 mm Hg). Alumino-chrome-potassium catalyst was found to give the highest yield of (1) and to have a useful active life of up to 80 hours. A much higher yield of 47% was obtained under the same reaction conditions in dehydrocyclization of piperylene-3-methylpentadiene-1,3 to methylcyclopentadiene. 2-ethylbutadiene formed easily methylcyclopentadiene with Card l/ 4 S/595/6o/ooo/ooo/oll/oi4 Catalytic synthesis of ... Eo40/E435 38% yield. The reaction is sensitive to pressure. Dehydrocyclization of piperylene under a slightly reduced pressure leads to some isomerization to isoprene and pentadiene-1.4 and to hydrogenation giving pentenes and 2-methylbutene-1. A sonsiderable quantity of aromatic hydrocarbons is formed if the reaction is carried out under atmospheric pressure: at 600'C and atm pressure piperylene gives a 5Mo yield of benzole, toluol and xylol. By carrying out the reaction at reduced pressure and re-.:~ytling the non-reacted piperylene, the yield of (1) is raised to 40%. The two methods of M preparation were studied on pentadiene-.1.3.. 3-methylpentadiene-1,3 and 2--ethylbutadiene--1,3 (dehydrocycl-lzaticii method) and on cyclopentene, methylcyclopentene and zy:;lopentane (dehydrogenation method). The reactions were c;arried out in a quartz tube, 18 mm in diameter at 500 to 600'C, the pressure being varied from atmospheric to 20 to 25 mm Hg, The yield of (1) in the reaction products was determined using B.N.Afanas7yev's method (Ref.1; Zavodskaya laboratoriya., no.12, 1948, 1493). The catalysate was fractionated and analysed by optical and ~hem;.,_al methods. Evaluation was made of a number of catalysts but a Ild t 0 a 16 (1.4%)* K20 (2 mixture of A1203 (84() + Cr203 Card 2/4 S/595/60/000/000/011/01" Catalytic synthesis of E040/E435 specific surface of 97.9 cm2/g was found to be the most Complete results are reported including data for the compcsiti~'n z' all catalysts tried and the reaction products identified in the catalysate. It is concluded that cyclopentadiene and its homologues can be obtained by dehydrocyclization of diene hydro- c_arbons of the aliphatic series and dehydrogenation of five-mf-mber ,cyclanes and cyclenes, the yield of (I) in dehydrocyclization of alkadienes being 18 to 47%. Dehydrogenation of cyclenes gives up to 58% of (I). Under the same conditions, cyclopentane and methylcyclopentane are dehydrogenated in 14 to 311% yield, The optimum conditions for cycloalkadiene formation from the above hydrocarbons are at 600"C and 20 to 25 mm Hg. Acknowledgment-3 are expressed to Yu.P.Yegorov for his assistance. Academician S.V.Lebedev is mentioned in connection with his method for the production of divinyl. There are I figure, 5 tables and 41 references: 14 Soviet-bloc, I English translation from Sovie, publication and 26 non-Soviet-bloc, The four most recent references to English lan,~uagve publications read as follows~ C~A~, 47, 6645 11953 _o, Joiies T,G~ US Patent 2,636-o66, 1953, Card 3/4 S/595/60/000/000/011/014 Catalyti.c synthesis of Eo4o/E435 Ref,27 Kennedy RM., Hetzel S-J, Industr. Engng. Chem- 421: 19~-9 71- 5'1-1 Ref.28. Lodge W.V_ Walters W.D. J~ Am~ Chem, So:-. 4,51. Ref,29, Mundy C.1-7- J. Oil Colour, Chemxst, Assoc, 38 211)_ S/595/60/000/000/012/014 E196/E485 AUTHORS. Shuykin, N.I., Timofeyeva, Ye.A., Dobrynina, T,P, TITLE., Contact.-catalytic dehydrogenation of pentanes SOURCEg Vsesoyuznoye soveshchaniye po khimicheakoy pererabotke neftyanykh uglevodorodov v poluprodukty dlya sinteza volokort i plasticheskikh mass, Baku, 1957, Baku, Izd-.vo AN Azerb. SSR, ig6o. 261-265 TEXT: In earlier published work, the authors found tbat dehydrogenation of n-pentane using catalyst composed of oxides of Al, Cr and Mg in molar ratio 45:30:25 at 500 to 550'C with space -elocity of 1.2 hr-1 gave condensate containing 21 to 26% pentenes, 1.e. 18 to 19% of the transformed pentano. A more effective catalyst of the composition A1203, Cr203, K20 (90.7:5.693.7 mol %) gave from isopentane at 5270C an 87% yield of catalysate with an olefin content of 38%, consisting of all isomeric isopentenes, mainly 2-methyl-2-butene and also n-pentane (0), isoprene (2%) and small quantities of pentene-1, pentene-2 and toluene. Under identical conditions, n-pentane was dehydrogenated in 88% yield to a product containing 31% of olefins including: pentene-.2 (28%)., Card 1/ 3 S/595/60/000/000/012/014 Contact-catalytic dehydrogenation E196/E485 pentene-1 (0), also isopentane (3%) and pentadienes kl%), The yield is increased by 3 to 4% if the catalyst is reactivated with hydrogen. The same catalyst was used to study the effect of temperature., space velocity and the duration of working cy-les., The catalyst's activity is claimed to be such that reaction equilibrium is reached at 500 to 5500C with a space velocity of O~3 to 0,5 hr-l~ The effect of space velo-city on the yield of pentenes varies with temperature, At 500'C the yield of isopentenes is reduced from 39 to 27 mol % when space velocity rises from 0.5 to 1.1 hr-l, The corresponding reduction in the yield of isopentenes is 46 to 42% at 527'C and none at 550'C. At 575C space velocity can be varied from 0.3 to 1.7 hr-1 withiout effe_~t on the yield, The catalyst's active life decreases with increase in reaction temperature, In order, to obtain maximum quantity of isopentenes without regard to the usage of raw materials, high reaction temperature (550'C) and high space velocity (Izl to 1.7 hr-1) are recommended, If, however, the object -is to get tht highest conversion of isopentane to isopentene. then the lower temperatures may give more economical operation. There are Card 2 /3 5/595/60/000/000/012/014 Contact-catalytic dehydrogenation. .- E196/E485 2 figureg, 2 tables and 5 referencesi 4 Soviet-bloc and 1 non Soviet-bloc, Card 3/3 5(0) AUTHOR- Shuykin, N.10, Corresponding S/030/60/000,10111026/067 Member of the;kcademy of Sciences B015/3008 USSR TITLE: Scientific Conference Devoted to Petroleum- and Coal Chemistry PERIODICAL: Vestnik Akademii nauk SSSR, 1960, Nr 1, PP 73-74 (USSR) ABSTRA,CT: The Conference was held at the Technical School of Higher Education for Chemistry Leuna-gerseburg (Eastern Germany) from October I to 5, 1959~ K. Winkler, Minister for the Chemical Industry of Eastern Germany, reported on the chemical industry in the Republic and the establishment of a number of new productions which are based mainly on the chemical proces- sing of petroleum,, V. Blauhut described the essential problems which resulted in connection with the further development of petroleum.- and coal chemistry. He underlined the utility of a scientific-technical cooperation with the USSR and the people's democracies, Reports of scientists from Eastern Germany are mentioned further. The author jointly with I.F~ Bellskiy on behalf of the Soviet scientists reported on Card 1/2 the catalytic hydrogenolysii~in the series of the furfuran4 I Scientific Conference Devoted to Petroleum- s/1030/60/000/01/026/067 and Coal Chemistry B015/BO08 compounds~ The delegates visited the -Chemical Kombinat "Leuna" after the conclusion of the Conference, wel - Card 2/2 IJ Lt1 Catalytic Conversions of ;)-C,.-r--ee~e Over -, 8 0 -"' 0 ~; Platir.11.zed Alurrina Unde- !~lrdrogen P!-ess.,re Sov 116-2 - 6 0 - 1 - 10 1 ASSOCIATION: SUBMITTED: There are 9 reCerences, 6 Soviet, 3 U.S. The 3 U.S. references are: Haen,--el,V , Donaldson, G. R., Induztr. and Engng. Chem , 42, 582 (10F-W; Pitts, P. M., Connor, "~ j - j. E., Leum.. L. M.. industr, and Fno*ng, Chem., 41, 7 70 t a Chem, Rev., . ,1955); Szw r M. 47. 171 (1950). N. D. Zelinskly Tnstitute of Organic Chemistry of the Academy of Sciences of the USSR (Institut organicheskoy khIml'- imeni N. D. Zelir-skogQ Akademli nauk SSSR) June 6, 1950 1 Card 313 r V. A U 0 !_"S) -1 oni De hy d n'-, tr Il T ITI E Corn,,nuillcat j c, CL- Me thy ltetra- hydropyr."!rl Over, 'rlO,I-Al_0l C-j y:1 I FE H I OD I C A 1, 01 of Cl -me thy 111(! ral ly(h.opl, r,,an (1) wndt~,r the ,s of' condit-lor, Its dehydi,atlon ov;-,:- T 1, 0,, - A J0, ca'. ly t ",-)-,)0 -,a n d W -0. 1101-tv !;f o, If-Y 'i U(I, it.c I cI 1, IL A + cl I'cl 1clIcif ClICII, I c :i 0 C;tt I I t of' th~~ on." "i vo v".ri rl F-1,1~,~ t Iona I d :10 t ll Ia t lon of' th~, Products of' cata- 1,; of' e p;- I rm-.~ n "I , conduc- ;-,'u 41:0 (a) amount Al Al TL G K . 9, h 9,7 5 3 n 5 3o o"-, " 1.3 to,:1 - 1.1,7 1 .0 6110 90 o.:1 ,,,s 1; .1.3 1 , 1; 27, G k t.: Lj -:e Velocity, I f run j 0 I I -~llld t *,,~.'~:,- 1`l(-",- U.S Th- U.S. J . C l .(~m S o It son 80"' . . 1.'. Bul.clh, W. F). ,ft 1" ! u1, O lc".,111~- cllelfi ktr-y :i ,-*Lld,-~l'liy . f '..I!,,ikoco Akaderrill tiaul~ s/o62/60/000/03/05/007 BO08/BOO6 AUTHORS: Shuykin. N. I., Tulupovaq Ye. D. TITLE: Preparation of Aronatio HydrocarbonalFrom Tuymazy Gasoline by Two-stage Aromatization PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheakikh nauk, 1960, No. 3, PP- 490-494 TEXT: The possibility of preparation of toluene and xylenes from V/ Tuymazy gasoline with a low anti-knock value was investigated. The two- stage aromatization method was applied for the heptane-methyl cyclohexane fraction boiling point 91 1030C) and the octane-dimethyl cyclohexane fraction ~boiling point 117 1270C). The fractions investigated were obtained by rectification. The properties of the initial material and the fractions obtained are listed in Table 1. The results obtained by two- stage aromatization of the heptane-methyl cyclohexane- and octane-dimethyl cyclohexane fractions, as well as of Tuymazy unrectified gasoline and the residue remaining after distillation of the fraction boiling at 91 - 1030C Card 1/3 Preparation of Aromatic Hydrocarbons From S/062/60/000/03/05/00-i Tuymazy Gasoline by Two-stage Aromatization BOOB/BO06 are tabulated in Table 2. Changes in the activity of the catalyst during long-time dehydration are illustrated in Figs. 1 and 2. Platinized carbon containing 10% finely dispersed platinum and nickel - copper - aluminum oxide (67.5% Ni + 2-5% Cu + 30% A1203) were used as catalysts. Tests showed that the toluene content of the heptane-methyl cyclo- hexane fraction can be increased from 5 to 30% by volume by two-stage aromatization in the presence of 10% platinized carbon. A Ni-Cu.-A120 catalyst can also be used for dehydrogenizing hexamethylene hydrocarLns. It is less stable than the platinized carbon catalyst, but can be re- generated in situ. In the case of the octane-dimethyl cyclohexane fraction (boiling point 117 - 1270C) of the Tuymazy gasoline, the content of aromatic hydrocarbons, particularly that of xylenes, can be increased from 8 to 33% by volume by two-stage aromatization. The xylene content alone is increased by 17% owing to isomerization of 5-membered cycloparaffins to form 6-membered cycloparaffins. Removal of the fraction boiling at 91-1030C does not lower the anti-knock value of the residual Tuymazy gasoline. There are 2 figures, 2 tables, and 15 references, 12 of which are Soviet, Card 2/3 Preparation of Aromatic Hydrocarbons From S/062j6O/OOO/O3/O5/OO7 Tuymazy Gasoline by Two-stage Aromatization Boo8/Boo6 ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo k1 Akademii nauk SSSR (I%stitute of OrK n*c (I. . v imeni N. D. Zelinskiy of the Academy of Sciences, USS ) SUBMITTED: July 18, 1958 Card 3/3 MINACHEV, Kh.M.; SHUYKIN, N.I.; MAMOV. M.A. Bffect of the specific surface of a platinized aluminosilicate on the degree of u-nonane conversion. Report -Wo.l: Change in the activity of platinized aluminosilicate in the course of the treatment of the carrier with hydrogen. Izv.Ll SSSR Otd.khim. nauk no-5:907-912 Nr 160. (MIRA 13:6) 1. Institut organicheskoy khimii imeni N.D. Zelinskogo Ak&demii nauk SSSR. (Aluminosilicates) (Platinum) (No"Ane) ? I I SALIMOV, M.A~.-. VIKTOF.OVA, Ye,A,.; :,MVJUNSK2..YA, L. L.; SIIUYKIN, N: I larared spectra of alkyl.phenols and their simple ethers. Azerb. k.him.zhur, no~6-'99-105 t60. (!-UFA 14,1- 8) (Phenol-Speptra) SHMIN, N. I.; POZDNYKK, N.A. Catalytic alkylation of tetralin. Report Mo.l: ADWIation of tetralin with amylenes. Izv.AN SSSR.Otd.kbim.nauk no.6: lo94-lo97 ii 16o. (KIRA 13:7) 1. Institut organicheskoy khimii imeni N.D.Zelinskogo Akademii nauk SSSR. (Naphthalene) (Pentens) (Alkylation) AUTHORS: Shuykin, N. I., Pozdnyak, N. A., TITLE: Catalytic Alkylationlof Tetralinl. of Tetralin With Heptene-1 3106 9/000/07/06/007 B015PBO254 Shlyapochnikov, V. A. Information 2. Alkylation PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh naukq 1960, No. 7, PP- 1254-1257 TEXT: The authors alkylated Tetralin with heptene-1 in a continuous-flow apparatus using two types of catalysts. In one series of experiments they used an aluminum oxide treated with hydrofluoric acid (10% and 20% HF), in the other series an aluminosilicate catalyst; the experiments were carried out at atmospheric and increased pressure and at different tempera- tu.res (Tables 1-3, influence of different test conditions). In the cata- lytic alkylation, a mixture of P-heptyl Tetralin and Pgpl-diheptyl Tetralin was obtained. The given data show that with the aluminosilicate catalyst the following o8timum conditions exist: volume velocity 0.25 hours~l, temperature 200 C, pressure 10 atm, molar ratio Tetralin : heptene-1 = 2 : 1. Under these conditions, the yield in P-heptyl Tetralin is 48.7% ut"ll Card 1/2 M2 Catalytic Alkylation of Tetralin. Information 2. S/062 0/000/07/06/007 Alkylation of Tetralin With Heptene-1 BO15/BO54 with respect to heptene-1, and 24.3% with respect to Tetralin. The infra- red spectra of the heptyl Tetralin synthesized showed that the heptyl group lies in the P-position. B. A. Kazanskiy, G. A. Tarasova, and 0. D. Sterligov are mentioned in the paper. There are 3 tables and 6 references: 3 Soviet and 3 American. ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinskiy of t~e Academy of Sciences, USSR) SUBMITTED: December 10, 195 Card 2/2 86413 I Ts S/062/60/000/008/021/033/xx 1~1.sglo 2209 BO13/BO55 AUTHORS: Popov, M. A. and_~~ I. TITLE: Catalytic Synthesis of Nitriles. Communication 3- Prepara- tion of Aromatic Nitriles PERIODICAL: I2vestiya Akademii nauk SSSR. Ot' deleniye khimicheskikh nauk, 1960, No. 8, pp. 1451-1456 TEXT: The present paper deals with the catalytic synthesis of nitriles from aromatic alcohols and ammonia in the presence of nickel/aluminum- oxide catalysts. The investigation was undertaken with a view to finding the most suitable conditions of synthesJs, and tc study the effect of the phenyl radical on ihe composition of the reaction products. Experiments were performed with benzy! alcohol, P-phenyl ethanol and y-phenyl propa- nol. The reaction was carried out at 270-3900C and atmospheric pressure in a continuous system. The catalysts contained 3, 7.5 and 15"' reduced nickel precipitated on aluminum oxide. Catalyst preparation and experimen- tal apparatus have been described in Ref. 7. Systematic experiments showed that at 3900C, benzonitrile is formed from ammonia and benzyl alcohol on a 3% nickel/aluminum-oxide catalyst in 51.7% theoretical yield. The Card 1/3 86413 Catalytic Synthesis of Nitriles. CGmmunication 3. S/062'r.'J" 2 Ift 3YXX V1 000, 00811b Preparation of Aromatic Nitriles B013/B 055 reaction of P-phenyl ethanol with ammonla at 300 0C and of y-phenyl pro- panol with ammonia at 330 0C over 7-Wo' nickel/aluminum-oxide catalysts also lead to the formation of the corresponding phenyl acetonitrile (44-06 yield) and P-phenyl propionitrile (50.8% yield). The authors describe the reaction conditions given above as optimal.. The following reaction mechan- ism is assumed tc explain the formation cf small quantities of amines and aromatic hydrocarbons as by-prodLjts _`n the cyanation of aromatic and ali- phatic (Ref. 7) alcohols. The experiments showed that the amine formation is independent of the amount of nitrile formed. The first step is there- fore assumed to be the conversion of al-lohol to the primary amine. Forma- tion of secondary and terriary amines can then proceed according to the scheme: 2ArCH 2NH2 ? (ArCH 2)2 KH 4.- NH 3* Part of the ammonia is decomposed to nitrogen and hydrogen on the catalyst surface: 2NH ;0 N + 3H,. The 3 2 C hydrogen so formed, together wj.+,h the hydrQgen formed -in the main reac- tion, reduces a certain am,.)unt cf the final nitrile to the aromatic hydro- carbon. There are 4 tables and 24 references: 6 Soviet, 8 US, 6 German, 6 French, 3 British, and I Belgian. ASSOCIATION: Institut organicheskoy khim-L'i im. rf. D. Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Card 2/3 Zelinskiy of the Academy -,~f Sciences USSR) 86413 Catalytic Synthesis of Nitriles. CGmmunication 3. S106 60/000/00*1/0 3YX X Preparation of Aromatic Nitriles B013YB055 SUBMITTED: February 2, 1959 Card 3/3 86414 S/062/60/000/008/022/033/XX BO13/BO55 AUTHORS: Timofeyeva, Ye. A., Dobrynina, T. P., Plotnikov, Yu. N., Petryayeva, G. S., and Gayvoronskaya, G. K. TITLE: Catalytic Dehydrogenation of Isohexanes PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1960, No. 8, pp. 1457-1465 TEXT: The present paper is a continuation of the investigation into the dehydrogenation of hydrocarbons of different structures over an aluminum- chromium-potassium catalyst. The catalyst is discussed in detail in Ref.l. The 2-methyl pentane, 3-methyl pentane, and 2,3-dimethyl butane used in this investigation were prepared by the Grignard reaction. 2,2-dimethyl butane was obtained by pyrolysis of pinacoline alcohol acetate ~Ref. 2). The experiments were carried out in a continuous systemg at 500 C and atmospheric pressure and a flow rate of 0.5 h-1. The cataly8t was re- generated after every experiment by oxidation in air at 700 C. The properties of the isohexane catalyzates are listed in Table 1 and the -.1 1/3 86414 Catalytic Dehydrogenation of Isohexanes S/062/60/000/008/022/033/Xx BO13/BO55 composition of the gases formed in Table 2. For comparison, the correspond- ing data for n-hexane are also given. As is shown, dehydrogenation of 2-methyl pentane, 3--methyl pentane and 2,3-dimethyl butane yields 34-40% unsaturated hydrocarbons. Isohexanes form up to 2% and n-hexane up to 43% aromatic hydrocarbons. 2,2-dimethyl butane was found to form 15% un- saturated hydrocarbons. Formation of aromatic hydrocarbons was not ob- served. The gaseous products formed from 2--methyl pentanev 3-methyl pen- tane and 2,3-dimethyl butane contained 84 - 90% hydrogen, 9 - 12% methane, ethane, and propane, and I - 4% of other alkenes and alkanes. The gas ob- tained from 2j2-dimethyl butane contained 72.6% hydrogen, 21.2% C -C alkanes and 6.2% of Gther hydrocarbons. These data show that 2,2-hJthyl butane is less stable under the given conditions than all cther isohexanes. This conclusion was confirmed by the examination of the-liquid catalyzates. Analytical data on the catalyzatecomposition allow the conclusion that, in hydrogenation under the given conditions, all the isohexanes form alkenes containing essentially 6 ~,,arbon atoms. Isomerization was not observed in dehydrogenation of 3-methyl pentane. Slight isomerization occurred during dehydrogenation of 2-methyl pentane and 2,3-dimethyl butane. 2,2-dimethyl butane formed alkenes during the catalytic reaction. Approximately half of these alkenes were !somerization products: 4-methyl 2-pentene, Card 2/3 86414' Catalytic Dehydrogenation of Isohexanes S106 60/000/008/022/033/XX B01 3YBO55. 2-methyl 2-pentene and 2,3-dimethyl 1,3-butadtene. Finally, a thermo- dynamic calculation of the reaction isohexanes - 0 isohexenes was carried from the ' out (Table 8, Fig. 2). It Is evident results obtained that the experimental yields of' isohexenes approach the equilibrium yields. Fig. 1 represents ohromatograms of an artifioial hydrocarbon mixture and several fractions of isohexane catalyzates. The authors thank R. N. Shafran for carr,ving out the analysis of the gases. There are 2 figures, 9 tables, and 9 referenc,3s: 7 Soviet, I US, and 2 British. ASSOCIATION: Institui organicheskoy khimii im. N. D..Zelinskogo Akademii nauk SSSR (Institute:, cf-Organic Chemistry i-meni N. D. Zelinskiy of the A,~ademy cf S,;Iences USSR) SUBMITTED: February 1'1, 1959 Card 3/3 S/062/60/000/008/023/033/XX B013/BO55 AUTHORS: M--nachev, Kh~ M., Shuykin, N. I , and Markov, M. A, TITLE: Investigation of the Effect of the Specific Surface of Platinized Alumosilicate on the Degree of n-Nonane Can,-**e:sion PERIODICAL: izvest.iya Akad,~mii nauk SSSR. Otdeleniye khimicheskikh nauk, 1960, No. 8, pp. 1466-1470 TEXT: This paper is a continuation of the studies on the effect of the specific surface of catalysts on the degree of hydrocarbon conversion. For this purpose, the authors studied the conversion of n-nonane on alumo- silicate catalys%3 with wlidely varying specific surfaces. Two 0.5% plati- num/alumosilicate catalysts with specific surfaces of 320 m2/g (K_I) and 60 m2lg (K-2) -nere used. A standard alumosilicate catalyst for the cracking process was -.used as carrier for the preparation of the platinum catalysts. To prepare the latter, the carrier was saturated with a dilute H2PtCl6 solutlon. The data ~.-,f the n-nonane used were in agreement with those given in Ref- 4. Infrared spectra showed the n-nonane to be free Card 1/3 Investigation of the Effect of the Specific S/062/60/000/008/02'#/033/XX Surface of Platinized Alumosilicate on the B013/B055 Degree of n,.Nonane Conversion of isomers. The experimental apparatus has been described in Ref. 1. The experiments were carried out in a continuous system at 360 to 450 C, a hydrogen pressure of 10 atm and a flow rate of 1 h-A. The molar ratio of hydrocarbon and hydrogen was 1:5. A fresh catalyst was used for each ex- periment. The results of the examination of the catalyzates are listed in Tables 1 and 2 and graphically represented in Figs. 1 - 3. These data show that the degre-i of hydrooracking of hydrocarbons considerably decreases with decreasing specific catalyst surface. This is in agreement with data given in Ref. 2. The yields of hydrocracking products on X-1 catalysts were found to increase mcre rapidly with a temperature rise than on K-2 catalysts. At temperatures of 420 0 - 4500C, hydrocracking on K-2 is in- significant, which enables C9-isoalkanes to be obtained in comparatively high yields (54% at 4W'C), On K-1, the maximum yield of isononanes is obtained at03800C (53~). Since arcmatization occurs to a noticeable degree only at 400 C, aromatla hydrocarbons can be obtained over K-2 before C isoalkane yields are reduced. The total yield of hydrocracking product2 under the experimental conditions was 45.7% over K-1, and 25.3% over K-2. The experiments ha-.,e thus shown that by decreasing the specific surface Card 2/3 Investigation of the Effect of the Specific S/062/6o/ooo/oo8/O23/O33/XX Surface of PlatinLzed Alumosilicate on the BO13/BO55 Degree of n-Nonane Conversion of the catalyst the process can be carried out at higher temperatures without the occurr,;nce cf hydrooracking. There are 3 figures, 2 tables, and 4 Soviet references. ASSOCIATION: Institut organichoskoy khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute- of Organic Chemistry imeni N. D. Zelinskiy of the Acad-amy of Sciences USSR) V/ SUBMITTED: F-sbruary 76, 19'0 Card 3/3 S/062/60/000/008/026/033/XX BO13/B055 I- and An, V. V. AUTHORS: _ah~n, ~N. TITLE: Dehydration of Tetrahydropyran on TiO 2 - Al2 03 PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1960.4 No. 8, pp. 1508-1510 TEXT: In this brief publication, the authors describe a study of the dehydration of tetrahydropyrans on TiO 2 - Al 203(8 mole%'Al203) and the dependence of the yields in cyclopentadiene and pentadienes on the flow rate and temperature. The experimental technique and preparation of the catalyst were described in Ref. 3. The relation between tetrahydropyran transformationto cyclopentadiene and piperylene and the flow rate at 6oo 0C was found to be the same as in the case of tetrahydrosylvan. The maximum yields of cyclopentadiene and pigerylene, however, were lower, i.e., 10.2 and 36.6% respectively at 600 C and a flow rate of 1 h-1. The maximum cyclopentadiene yields are obtained at comparatively low tempera- tures, around 4000C, a fact which deserves attention. Piperylene yields increase with rising temperature and at high temperatures attain a practi- cally constant value. Thermodyamiz- equilibrium calculations carried out Card 1/2 Dehydration of Tetrahydropyran on TiO 2 -Al203 S/062/60/000/008/026/033/XX B013/BO55 by Kilpatrick qnd collaborators (Ref. 2) showed that 1,4-pentadiene can be transformed to piperglene in yields of 90 to 95% in the temperature range investigated (350 - 6000C). The low 1,4-pentadiene content in the catalyzate proves that its transformation to piperylene proceeds at a remarkable rate. It was found that the isomerization of the primarily formed 1,4-pentadiene is accompanied by a number of other reactions: hydrogenation~ polymerization, cracking0and charring. As a result, the catalyzate contains up to '8-5% (at 6oo C) 1-pentene and 2-pentene, and traces of isoprene, isoamylenee,n-pentane and isopentane. There are 2 figures and 4 references: 3 Soviet and 1 US. ASSOCIATION: Institut organicheskoy'khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinskiy of the Academy of Sciences USSR) SUBMITTED: January 7, 1960 Card 2/2 S/062/60/000/008/027/033/Xx B013/BO55 AUTHORS: Viktorova, Ye. A., and Korosteleva, G. S. TITLE: Catalytic Synthesis of 2,4-Di-tert-amyl Phenol PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1960, No. 8, p. 1510 TEXT: This is a brief communication on the catalytic synthesis of 2,4-di- tert-amyl phenol. The latter was synthesized by alkylating phenol with trimethyl ethylene in the presence of a KU-1 cationite, a sulfonated phenol-formaldehyde resin. The yield of pure 2,4-di-tert-amyl phenol was 30% of the theory. 2,4-di-tert--amyl phenol was then transformed to the corresponding phenoxy acetic acid derivative. This was then precipi- tated with hydrochloric acid and recrystallized from 20% alcohol. The yield was 30 to 35%, Amy! phenols, including 2,4--di-tert-amyl pheno; was used as antioxidants and as intermediatesfor the synthesis of in- secticides and herbicides. There is 14 non-Soviet reference. ASSOCIATION: Moskovskiy gosudarstvennyy universitet im. M. V. Lomonosova (Moscow State University imeni M. V. Lomonosov) LAR&A94a., S1062/601'000/009101 3/021 B023/BO64 AUTHORS: Shuykin,,N. I. and Vasilevskaya, G. K. TITLE: Catalytic Dehydration of Alpha Isobutyl Tetrahydrofurane PERIODICAL: Izvestiya Akademii nauk SSSR- Otdeloniye khimicheskikh nauk, 1960, No. 9, pp. 1664-1667 TEXT: N. I. Shuykin, V. A. Tulupov, and I. F. Bellskiy referred in their paper (Ref. 3) on the dehydration of tetrahydrosylvane on a titanium- alumina catalyst at 500-6000C and a pressure of 20-30 mm to the fact that this catalyst leads to the formation of both open and cyclic dienes. The authors studied the dehydration of a more complex tetrahydrofurane homologi viz.a(-isobutyl tetrahydrofurane. They carried out this reaction on the same catalyst and expected to obtain 6-methyl pentadiene-1,3 in the mixture with its dehydrocyclization products. At 600 and 5500, and a pressure of 20-30 mm, and a volume rate of 0.1 h-l,cK-isobutyl tetrahydro- furane underwent strong cracking, and, consequently, liquid catalyzates were obtained in a yield of 25-30% only. It was a complex mixture of rapidly resinifying hydrocarbons with a high boiling point. After the u/ Card 1/2 Catalytic Dehydration of Alpha Isobutyl S1062V601000100910131021 Tetrahydrofurane B023/BO64 dehydration temperature had been reduced to 4000C and the contact time shortened, a liquid catalyzate was obtained in a yield of 95P/c. In indivi- dual fractions, with boiling points between 121-7-136cC, it contained between 81.0 and 92% diene hydrocarbons,. Summing up: Considerable amounts of unsaturated hydrocarbons, especially dienes, may be obtained oil the basis of a pentosan-containing initial substance and furfurole, furane homologs, and their tetrahydro derivatives. The finding of conditions for- the catalytic dehydration of tetrahydrofurane homclogs under the formation of complicated mixtures of dienes and alkeres is regarded as a further task; in this connection it is possible to isolate individual hydro- carbons. A formula of Ye. A. Timofeyeva, T. P. Dobrynina, and V. M. Kleymenova is mentioned. A determination method developed by G.,P.Kaufwan and G. D. Gallpern is applied. There are 1 table and 9 references: 6 Soviet, 4 French, 1 US, 2 British, and 1 German. ASSOCIATION: Institut organicheskoy khimii im. N.D.Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinskiy of the Academy of Sciences USSR) SUBMITTED: March 18, 1959 Card 2/2 S/062/60/000/010/011/018 BO15/Bo64 AUTHORS: Minachev, Kh. M., Ryashentsevaq M. A., and Shuykin, N. I. Catalytic Transformations of Cyclohexane'~Methyl Cyclo- TITLE: pentane, and n-Hexane on a Palladium Alumina Catalyst at Increased Temperature and Increased Hydrogen Pressure A PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1960, No. 10, pp. 1844 - 1847 TEXT: In previous papers.(Refs. 1-4), the authors investigated the catalytic properties of 0.5% palladium alumina catalysts in the re-form- ing of small gasolineUractions of petroleum from the Illskiy, Khadyzhenskiy, Ural, and Volga deposits. To confirm the results obtainedy the authors studied the transformation of cyclohexane, methyl cycl pentane, and n-hexane on 0-5% palladium-containing alumina catalysts under the optimum conditions of re-forming gasoline fractions (48OPC,2()atm, H :HC 5, v = 1.0 hours -1 . The experiments were 2 rcarried out in a continuous-flow apparatus. The catalyzate obtained from cyclohexane -Card I Catalytic Transformations of Cyclohexane, S10621601000101010111018 Methyl Cyclopentane, and n-Hexane on a B015/Bo64 Palladium Alumina Catalyst at Increased Temperature and Increased Hydrogen Pressure contained 5Wo benzene, while C 6 paraffin hydrocarbons with approximately 6% and five-membered cyclanes with approximately 43% were detected in the naphthene paraffin component (Table 1, composition), i.e., a de- hydrogenation to benzene, an isomerization with a contraction of the cycle, and a slight hydrogenolysis under the formation of alkanes took place. Approximately 9 5% aromatic hydrocarbons and, besides unchanged n-hexane, approximatel; 5% paraffin hydrocarbons with iso-structure were obtained from the transformation of n-hexane. Besides unchanged methyl cyclopentane, methyl cyclopentane (Table 2) yielded approximately 11% 2,3-dimethyl butane, 3-methyl pentane, n-hexane, n-pentane (approxi- mately 3.8%), and approximately 1.2% cyclohexane of the paraffin com- ponents, and 33% benzene as the aromatic component of the catalyzate. Thus, methyl cyclopentane undergoes an isomerization to cyclohexane and subsequent dehydrogenation to benzene, as well as hydrogenolysis and hydrocracking under the formation of n-pentane. A Scheme is given on the basis of the results obtained, and it is stated that the present Card 2 Catalytic Transformations of Cyclohexane, 3/062/60/000/010/011/018 Methyl Cyclopentane, and n-Hexane on a B015/BO64 Palladium Alumina Catalyst at Increased Temperature and Increased Hydrogen Pressure experiments confirm the formation mechanism of aromatic hydrocarbons in re-forming the above gasoline fractions. There are 2 tables and 6 Soviet references. ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinskiy of the Academy of Sciences USSR) SUBMITTED: May 14, 1959 Card 313 3106,16010001010/031 /031 73 0 0 2 ///,It 0 6 0 ....... S-uykin, N. I. , Tyan' Sin-khua Some Problems Concerning the 1114echanism of Conversion of :.:ethyl Cyclohexane on a Nickel - Alumina Catalyst at Tncreased Hydrogen Pressure OD I C1, L Izvestiya Akademii nauk SSSR. Otudeleniye khimicheslkikh nauk, 11,160, 11o. 10, pp. 1891-1894 '_EXT: The authors studied the reaction 0oficyclohexane, me-thyl cyclohexane, methyl cyclopentane, and toluene at 360 C qnd 20 atn hydrogen pressure on a 10;,, Ni-Al203catalyst, volume velocity 0.2 h7l, and -molar ratio hydrogen: _'ydrocarbon = 4:1. 3enzene, me'uhvl cyclopentane, n-Dentane, n-hexane, -nd 2--_-ethyl pentane are chiefly .io-_ . Cyclohexane may dlecom~)ose 0 2 3, C_C_C_C_C_C 2 formed by t-.-,o or from cyclohexane under theze condi- mechanisma 6 C :1 2/! 6 C7,4 lard 1/3 1 Some Problems Concernina the Yechanism of 31061V601000/010; 3 1 ,onver--ion of ',:e'.hyl C-yclohexane on a Nickel - Alumina Catalyst at Increased Hydrogen 7re 9 o,2,re toluene, and benzene are chiefly formed from methyl cyclo- hexane. 11.4oreover, also 3-methyl hexane, 2-methyl hexane, and others, are .r ~ormcd. The following scheie is suggested for these reactions: C-C-C-C-c C I ~ C C C C if. C-~-C-~-c C-C-C-C-G-c C / H2 C-C-C- C C-C I H2 -CH4 C-rrc-C-C-C C C ~;' ., .-31 C-r_-C-C -C C-C-C-C-C-c 3H? 6c", 7 I C C + CH. Card 213 Scme Problems Concerning the Mechanism of S/062/60/000/010 /031/031 version of Methyl Cyclohexane on a B002/Bo6o .'i. 'el - Alumina Catalyst at Increased Hy:lrogen Pressure The reaction of methyl cyclopentane mainly yielded 2-methyl pentane, 3-methyl pentane, and benzene. The toluene reaction yielded methyl cyclohexane, cyclohexane, benzene, and others. There are 2 tables and 7 Soviet references. ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinskiy of the Academy of Sciences USSR) SUBMITTED: March 25, 1960 Card 3/3 S/062/60/000/01 1 /,008/0106 B01 3/BO78 AUTHORS: Shuykin, N. I., Tyan' Sin-Khua TITLE: Demethylization of Methyl Cyclohexane in Contact With Nickel Catalysts Under Hydrogen Pressure PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1960, No. 11 , pp - 2014 - 2018 TEXT: In this paper the catalytic demethylization of methyl cyclohexane on nickel catalysts was investigated in a continuous system under hydro- gen pressure of 20 at and at temperatures of 3300-3600C. Industrially produced silica gels served as carriers with a granulation of 1.5-2 mm, aluminum oxide of the type A-2 (A-2) and alumosilicate from GrozNII (Groznyy Petroleum Scientific Research Institute) which were pre-treated by the dynamic method (Refs. 9 and 10). Nickel aluminum oxide, nickel silica gel, and nickel-aluminum silicate catalysts were obtained by im- pregnation of the respective carriers with a nickel nitrate solution, by calculating 101/4 nickel per catalyst. A second specimen of the 1CF%6 nickel silica gel catalyst was obtained by simultaneous precipitation of Card 1/2 Demethylization of Methyl Cyclohexane in Contact S/062/60/000/011/008/016 With Ifickel Catalysts Under Hydrogen Pressure BO13/B078 appropriate nitrate solutions, and a third specimen by pre-treatment of the carrier with hydrofluoric acid. Results obtained by catalysis of methyl cyclohexane are shown in Tables 1-5- It was found that the cata- lyst treated with hydrofluoric acid is beat suited for the demethyliza- tion of methyl cyclohexane. The yield of cyclohexane in the presence of this catalyst amounted, after one passage, to 30.1% of the converted methyl cyclohexane. Moreovdr, this catalyst shows a larger selectivity than the non-treated one. The demethylization of methyl cyclohexane with nickel catalysts is complicated by the fact that part of the resulting cyclohexane is isomerized to methyl cyclopentane, and next, the hydro- genolysis of the latter takes place under formation of alkanes. Ye. I. Sillchenko is mentioned. There are 5 tables and 11 references: 9 Soviet. ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinskiy of the Academy of Sciences USSR) SUBMITTED: Jun.- 20, 1959 Card 2/2 S/062/60/000/011/011/ol6 B013/BO78 AUTHORS: Shuykin, N. I., Tyan' Sin-Khua TITLE: Hydrogenolysis of C 7 Alkanes in the Presence of a Nickel Aluminum Oxide Catalyst Under Hydrogen Pressure PERIODICAL: Izvestiya kkademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1960, No. 11, pp. 2046 - 2048 TEXT: This is a brief report on the hydrogenolysis of n-heptane, 3-methyl hexane, 2,4-dimethyl pentane, and 2,2-dimethyl pentane with a Ni-Al 0 catalyst in the continuous-flow system at 3600C and at a 2 3 hydrogen pressure of 20 atm. The molar ratio of hydrogen to hydrocarbon was 4:1. The volume velocity amounted to 0.2 h- 1. The composition of the liquid catalyzate was determined by chromatography. The waste gases were examined with a chromatographic gas analyzer. Results are tabulated. The table shows that, under the present conditions, the alkanes considered undergo hydrogenolysis, but isomerization does not take place. Card 1/4 Hydrogenolysis of C7 Alkanes in the Presence S/062/60/000/011/oli/ol6 of a Nickel Aluminum Oxide Catalyst Under BO13/BO78 Hydrogen Pressure Methylcyclohexane and cyclohexane are partially isomerized under the same conditions. Here, the rings are compressed into pentamethylene hydrocarbons. The composition of the gases thus obtained and of the liquid catalyzates indicates that the hydrogenolysis of the alkanes proceeds according to the mechanism of a systematic demethylation. The authors propose the following systems for the catalytic hydrogenolysis of C7 alkanes with varying structure: Card 2/0 Hydrogenolysi:j of C7 Alkanes in- the Presence ~SI062V601000101#10111016 of a Nickel Alumin .um Oxide Catalyst Under B013/3078 Hydrogen Prezsure It was found thatpunder 'the present' conditions',-the tertiar .y carbod atom in the 3-methylhexanc atom not only inhibits thd '~ydrogenolysis of the group directly bound to it, but also the relatively easy hydrogenolysis of the neighboring C-C bonds. The hydrogenolysis of the groups being most distant from the tertiary carbon atom proceeds with great rapidity. This hydrogenolysis is even-more.,.distinct in the case of 2,2-dimethyl- pentane which contains a quatern'ry carbon atom. D. bl. Tilicheyev and A. A. Polyakova are m6ntioned.~There are 1 table and 9 references: 5 Soviet, 3 US, and 1 German.. ASSOCIATION: Institut organicheskoy-khimii im. N.'D. Zelinskogo Almdemii nauk SSSR,(instituteof Organic Chemistry imeni N. D. Zelinskiy of the Academy of Sciences USSR). SUBITITTEDd April 18, ig6o Card 4/0 VIXTORO-VA, Ye.A.; SHUYKIN, N.I.; FOLYANSKAYA, E.I. I Cycloalkenylation of phenol by 1,3-CYclohexadiene. Izv. AU SSSR. Otd. khim. nauk no.11:2048-2049 H 160. (14IRA 13:11) 1. Moskovakiy goeudarstvannyy univerattet im.N.Y.Losonosova. (Cyclohexadiene) (Phenols) (Alkanylation) S/062/60/000/012/010/020 BO13/BO55 AUTHORS: --Shuykin,_ff, -I.,, Timofeyeva, Ye, A,, Plotnikov, Yu, N., and Andreyev, N. 3, TITLE: Composition of the Products of Dehydration of C - C n-Alkanes Over Aluminum-chromium-potassium Cata~yst 9 PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khimicheskikh nauk, 1960, No. 12, pp. 2173-2177 TEXT: In the present paper the authoisstudied the structure of unsaturated and aromatic hydrocarbons, but above all the composition of alkenes formed from n-alkanes at 5000C over an aluminum-chromium-potassium catalyst and a volume velocity of 0.5 h-1. n-hexane, n-heptane, n-octane and n-nonane were used for this reaction. The unsaturated hydrocarbons formed were found to consist mainly of alkenes. As regards number of carbon atoms, they cor- respond to the initial alkanes and have double bonds in the positions 2, 3 or 4. The catalyzate of n-hexane was found to contain 1-hexene also, but in much smaller amounts than 2- and 3-hexenes. The catalyzates of n-heptane, n-octane, and n-nonane possibly contain other alkenes in addition to the 2-heptene, 4-octene, and 4-nonene actually found. The quantities contained, howeverp are so small that they were not detectable in the Raman spectra. Card 1/2 Composition of the Products of Dehydration S1062V601000101210101020 of C6 - C9 n-Alkanes Over Aluminum-chromium- BO13/BO55 potassium Catalyst All catalyzates were found to contain dienes, the structures of which could not yet be established exactly. The structure of the aromatic hydrocarbons formed from n-alkanes becomes more complicated as the molecular weight of the initial alkane increases. n-hexane forms benzene, n-heptane toluene, n-octane mainly xylenes and ethyl benzene as well as lower-boiling aromatic hydrocarbons, benzene and toluene. The aromatic hydrocarbons formed from n-nonane consist mainly of methyl ethyl benzene, trimethyl benzene, and n- propyl- and isopropyl benzenes. Apart from these, the catalyzate contains lower-boiling hydrocarbons, benzene, toluene, and ethyl benzene. There are 5 tables and 5 references: 3 Soviet and 2 British. ASSOCIATION: Institut organicheskoy khimii im. N. D. Zelinskogo Akademii nauk SSSR (Institute of Organic Chemistry imeni N. D. Zelinskiy of the Academy of Sciences USSR) SUBMITTED: July 10, 1959 Card 2/2 . In 0 VI.L'C-.u'A, Ye.,',,.; 6AY,~I'L:9 G.v. Contact cata-ljtic ccnv-.rsions of Pa---t 5: Alkylation of 'v-creso" ',.y yiperylene. Vest. un. -Se---. 2: 11'adl. . 1,; nc.~S: 62-65 N-3 160. (:~:r.'I 1-/:-g) 1. Kafodra khirdi nefti Moskovs:-orpo u-nivers-,",eta. (GrC301) B&AURI, IT.G.; SHMIIT, N.I.; SHAKA-IIASHVILI, T.S. Catalytic transformatiom of N tridecane, N tetradecane and N pentade- cane under hydrogen pressure in a flow system. Soob.AH Gruz. JPIk no.6:655-662 Je 160. (MIRA 13:9) 1. AN GruzSSR, Institut khimii im. F.G. Melikashvili. Tbilisi i AN SSSR, Institut organicheskoy khImii im.N.D. Zelinskogo. Moskva F~redBtavleno chlenom-korrespondentom Akademii G.V. TSitsishvili. 2. Chlen-korrespondent AN SSSR (for Shuykin). (%cane) BXKAURI, N.G.; SMITKIN, N.I.; SHKARASHVILI, T.S. Improving the motor characteristics of a normal undecane and dodecane. Soob.AN Gruz.SSR 25 no-5:525-531 H 160.. OURA 14:1) 1. Akademiya nauk GruzSSR, Institut khimii imeni P.G.Kelftishvill, Tbilisi i AN SSSR, Institut organicheskoy khimli imeni N.Zelinskago, Moskva. Predstavleno chlonom-korrenpondentom Akademii G.V.TSitsi- shvili. (DDdecans) (Undecane) SIRJYKIN, N. I.; BRIVANSKATA, L.A. N Catalytic hydrogenation of phenols. Uep.khim. 29 no.5:648-668\lgy 160. (XIBA 13:7) 1. Khimicheskiy fakulltat Koskovskogo gosudaretyennogo universiteta im. N.Y.Lononosova. (Phenols) (EVdrogenation) S/074/60/029/05/03/005 B008/BO06 AUTHORSt Shuykin, N. I., Erivanskaya, L. A. TlTLEt Catalytic-iL*drbrgenationjof Phenols PERIODICALj Uspekhi khimii, 1960, Vol.29, No- 5, pp. 648-668 TEXTs An investigation of catalytic transformations occurring in the hydrogenation of phenols separated from higher fractions of primary resins, and in the hydrogenation of narrow fractions enriched in one or the other component was carried out. Sharp rectification- or chromato- graphic methods can be applied for separating these fractions. Previous research in the field of phenol transformation in hydrogenation is des- ciibed in Refs. 1-8. Hydrogenation of phenols to hydroaromatic alcohols is discussed in Refs. 1, 9-91. Hydrogenations on platinum-, palladium- P copper-, and nickel catalysts are described. Hydrogenation of pure ghen- ols can be carried out at comparatively low temperatures (up to 200 C) as well as at high- or atmospheric pressures in the presence of nickel- or platinum catalysts. Hydrogenation of industrial phenol mixtures is more difficult, owing to catalyst poisoning by sulfur-containing com- pounds. The reaction order of phenol hydrogenation is probably between zero and one. Which of the possible geometric isomers of the correspond- ,-Card -1/4 Catalytic Hydrogenation of Phenols S/074/60/029/05/03/005 B006/BO06 ing alcohol is formed, depends on hydrogenation conditions. Published data on the properties of cis- and trans-methyl cyclohexanols and melting points of their derivatives are given in Table 1. Hydrogenation of phenols to hydroaromatic ketones is described in Refs. 29, 66t 78, 92-101. In general, alicyclic ketones can be prepared by hydrogenating the corresponding phenols. Yields of these ketones. however, depend not only on hydrogenation conditions, the nature of the catalyst, and the amount of hydrogen adsorbed, but also on the structure of the initial phenol. The reduction of phenols to aromatic hydrocarbons is discussed in Refs, 5, 102-154. Catalysts based on molybdenum are generally applied. Experimental- and thermodynamic data indicate that a pressure drop during the hydrogenation of phenols in the presence of molybdenum catalysts increases the yields of aromatic hydrocarbons.1 The reaction, however, is slower and accompanied by considerable charring. At higher temperatures, phenols tend to give various condensation reactions. The formation of alicyclic hydrocarbons in the hydrogenation of phenols to the corresponding alcohols was observed by many investigators (Refs. 27, 28, 31, 66, 113, 118, 137, 140, 141, 149, 155-160). These hydroaromatic hydrocarbons, however, were only formed in small quantities as by-prod- ucts of hydroaromatic alcohols. In order to obtain alicyclic hydrocarbons-: Card 2/4 Catalytic Hydrogenation of Phenols B/074/60/029/05/03/005 B008/BO06 as main reaction product, the hydrogenation temperature must be chosen high enough to ensure dehydration of the alcohols. The behavior of polynuclear phenols in hydrogenation reactions has not been investigat- ed widely (Refs. 107, 128, 136, 141, 158, 161-168). High-pressure hydro- genation of these compounds in the presence of molybdenum catalysts yields hydrocarbon mixtures containing aromatic-, hydroaromatic-, and various other hydrocarbons. Phenol formation is also observed. Refs. 6, 169-213 deal with the destructive hydrogenation of higher phenols, by which lower phenols are obtained. Thermodynamically, dealkylation of phenols is also possible. It can be effected by cracking higher phenols, or, by reacting higher phenols, without a catalyst at higher temperatures. Yields of lower phenols, however, are small. Several patents (Refs. 199-204) recommend destructive transformations of phenols to be carried out not only in the presence of metal oxides and metal sulfides, but also in contact with cracking catalysts. The direction of the reaction can be determined by eboceing appropriate conditions and catalyst admix- tures. The following persons are mentioned: V. V. Tishchenko, M. A. Belopol~skiy, B. L., Moldavskiy, I. B. Rapoport, S. Ye. Lifshits, A. V. Lozovoy, M. K. D'yakova, V. N. Ipatlyev, N. A, Orlov, M. F. Shosta- kovskiy, V. V. Shabarov, Ye. A, Viktorova, I. Ye. Pokrovskayaq A. I. Card 3/4 Catalytic Hydrogenation of Phenols S/074/60/029/05/03/005 B008/BO06 Afanaslyeva, V. F. Polozov, Ye. 1. Sillchenko, A. Bagg T. Yegunov, D. Volokitin, S. A. Deryabing'A. M. Yasnyy, A. P. Terentlyev, A. N. Guseva. I. N. Nazarov, Ye. N. Zillberman, P. Fisher, N. Prokopchuk, Ye. I. Prokopets, I. I. Yeru, B. K. Klimov, I. F. Bogdanov, V. I. Boby8hev, M. P. Minchenkov, V. P. Konov, K. A. Alekseyeva, T. Gritfie- vich, V. Ilonanov, G. Z. Koshell, V. A. Lanin, M. V. Pronina, M. S. Knyazeva, V. I. Zabavin, M. 1. Kuznetsov, K. A. Belov, N. P. Masina, I. V. Kalechits, F. G. Salimgareyeva, N. N. Vorozhtsov junior , and V. N. Lisitsyn. There are 1 table and 213 references, 58 of which aze Soviet. ASSOCIATIONR Khimicheskiy fakulltet MGU (Chemical Department of the imeni M. V. Lomonosov) im. M. V. Lomonosova MSU (Moscow State University) Card 4/4 S/074/60/029/010/002/004 B013/BO75 AUTHORS: Shuykin, N. 1. and Viktorova, Ye. A. TITLE: Catalytic Synthesis of Alkyl Phenols PERIODICAL: Uspekhi khimliq 1960, Vol. 29,, No. 10, pp. 1229-1259 TEXT: The authors give a survey of studies made on the catalytic synthesis of alkyl phenols. The available publications were systematized according to the character of the alkylating substances. Papers are mentioned re- ferring to some catalysts, on the character of which the structure and the ratio of alkylation products are dependent. The subject of the first chapter is the alkylation of phenols with unsaturated hydrocarbons. The application of the following ~~atajy!jtsjis described: Acids as alkylation catalysts (Refs. 32-108); metal chlorides in alkylating phenols with alkenes (Refs. 63, 109-128); borofluoride (Refs. 129-168). Data obtained show that sulfuric acid is the most frequently used catalyst. It is pre- ferred due to its accessibility and its sufficiently high yields of alkyl phenols. Also alkylation in the presence of resin - ion exchangers seems to be promising. The use of borofluoride and of some of its molecular com- _~,rd 1/3 Catalytic Synthesis of Alkyl Phenols S/074/60/029/010/002/004 B013/BO79 pounds requires further study, The use of aluminum phenoxide seems to open new posnibilities in the synthesis of o-alkyl phenols. The second chapter deals with the alkylation or phenois with alcohols (Refs. 36, 65, 80, 81., 99~~ 173 277). As was proved by the mentioned data, the strue- ture and the yield of alkyl phenols are dependent on the reaction conditJons. These, in turn, depend on the structure of the alcohols employed, on the temperature, as well as on the nature of the catalyst. In some cases. phase stateand pressure factor play an essential part. In spite of the high yields, alkylation of phenols with alcohols is rather inexpedient for industrial purposes; in laboratory practice, however, it offers a number of advantages. In the third chapter,alkylation of phenols with al- kyl halogens is discussed (Refs. 109 278-335),. Data available an alkyla- tic~n with alkyl halogensishow that the reaction in the presence of aluminum chloride is- E6'-st -M-roughly investigated. However, it has to be taken into consideration that the isomerization of the radical entering into the phenol molecule does not always take place. Alkylation with ternary alkyl halogens in the presence of halogen hydracid is extremely easy, especial.. 1y if the alkyl halogen forms during the synthesis. By this means, the possibility of using more easily accessible alkenes is given. Card 2/3 Catalytic Synthesis of Alkyl Phenols S/074/60/029/010/002/004 B013/B075 Yu. G. Mamedaliyev, V. N, lpatlyev,, V., I~ Isagulyants, A. V. Topchiyev, 1,Tsukervanik, V. Tambovtseva, B. M. Dubinin, A. Ye. Chichibabin., A. S. Abdurasuleva, N. G. Sidorova, Z. N. Nazarova, I. N~ Samsonova, Z. P. Aleksandrova, A. B. Xuchkarev, and P. P. Bagryantseva are mentioned. There are 335 references: 40 Soviet, 188 US, 1 Austrian, I Belgian, 29 British, I Canadian, 1 Czechoslovakian, 1 Danish, 1 Dutch, 20 French, 38 German, 3'Itali~an, 1 Rumanian, 6 Japaneseand i Swiis. ASSOCIATION: Khimichsskiy fakul7tet MGU im. M. V. Lomonoscva (Department of Chemistry of the Mos'ccw State University imeni M. V. Lomonosov Card 3/3 5.3300,5.1190 77864 SOV/79-30-2-15/78 AUTHORSt Shuykin, N. I., Kashkovskaya, L. K., Kononov, N. F. TITLEz Catalytic Hydrodealkylation of Polyalkylbenzenes. II. Demethylation of Toluene over 10% Nickel-Alumina Catalyst. Effect of Temperature and of the Rate of Feed of TolUene PERIODICAL: ZhUrnal obshchey khimii, 1960, Vol 30, Nr 2, pp 1124- 430 (USSR) ABSTRAM The aUthOrS aLudied the effect of temperature and feed rate Of toluene upon the degree of hydrogenolysis of toluene over 10% nickel-alumina, in the temperature range 1130-5100. It was found earlier (Zhur. Obshchey Khim., 29, 2230, (1959) that the following reactions can take place 0under conditions of hydrogenolysis (Ni-Al2 03-P 46o , 5 atm): Card 1/1~ Catalytic Hydi-odealkylation of Polyalkyl- benzenes. II. Demethylation of Toluene over 10,9 Nickel-Alumina Catalyst. Effect of Temperature arid of the Rate of Feed of Toluene 7r, 7,7864 SOV/79-30-2-15/78 The experimental results show that in the temperature range 430-4600, reactions (2), (3), and (4) do not take place to any appreciable extent. (Hydrogenation was performed in apparatus which was described earlier (loc. cit. ); the products of catalysis were fraction._,.Lf.-~d arid identified by their Raman sVectra (optical analysis was performed by Yu. P. Yegorov); in all experiments the hydrogenitoluene ratio equaled 5) Increase of pressure speeds up reactions (3) and ~4)(from 0.6 to Card 214 35% for toluene-methyl6yclohexane conversion and from 1 "Y!, j, T - v r lu~rv N i r- I-e Y S_ lre flip t_, t To I u, e P. e Pr,l, an r a s - noreases destruction it ~h( ('~f rine aromat Lc ring: reacti-) '21 ll~ wus found that -a change C mporature C v o, m. li AC) 10'~ di)C-s LYS I S no~ esseti~.Ja y a f't c-c ~ ~he yiela cf trie Latal producr,zi n,~,,r the cont~en- -I~f benzene (30-35%). Trie "life" of the catalyst. ulmder conji-I.--ions of steadilly rising llemperWl-ure_ is cver 120 hours, vi Ihich is longer a-_ cumsr,ant ~erfkperature (at-- 146o it was f~-"Jnd 7--o leals ro ,a, u f' t ,~A -,ue n. e C rom hr, a consider-- , - , n benzene content e c r e a s e f rom 3:) -- 35 t-c -1 - , pr(Dd~ic-,,~ of" ca?,-al,,7s is ~bur Dn -rf-- c~tfler i-ialna '2~ is inhibited b higher flow rea c t i o n l Lu: n y . , k - There al-e 3' -.ables; arid 8 references, mf , _ S If e I U- . 3 The U.S. reference is- Selec~ed Card Va' F' Pn !Jes (- sical and Tnerrricdynamic Properties of , , y J A S IS T---' B IMI I IT E D 4v "I rn r j ~3 s u ull-gh i ~a i r: 1 & rn 1 13 r r,r h e A c a d my o ri- r-t-y., t i Al(,ij em m i 1 BOO',/BO55 AUTHORS: Sh--tykin, N, L., BeVskiy, I, Y-1 and Karakhanov. R. A., TITLE.- Hydrogenolysis of Tetrahydrofurans PERIODICAL: Zhurnal obshchey khimii., 1960, Vol. 30, No. 6, pp,, '933 - *937 TEXT: Since al! the investigations of Refs~ If - 4 on the reaction me~..hanism of the catalytic hydrogenationlof the furan ring were mainly ut- to establish only this mechanism, it sufficed to determine ,ha.:, ~~.he furan- and the tetrahyd---e-ofuran ring behaved differently in hydr-.genolysis, w--~hout investigating possible transformations of ~etrahydrofurans during hydrogenolysis in greater detail, In an .n'iestigatio-n -f the hydrogenolysis of tetrahydrofurans, however, e-,-erything Indlicat4ing the difference between the furan and the tetra- hydrofuran rings and their behavior in hydrogenolysis is of importance. For this reason the authors of the present work investigated the hydrc,genolysis of tetrahydrofurans,, They studied the hydrogenolysis of S/079/60/030/006/033/033/XX Card '/3 Hyd:-rgenf-,'Lys--, zi of Tetrahydrofurans S/079/60/030/006/033/033/XX BOOI/B0505 2-alky'-,-, 2 2.,d'Lalkyl-. and 2,5-dialkyl-tetrahydrofurans in the vapor f-Pase a,!. atmospher;i: pressure, using platinized carbon and a nickel - qlum~-num skele!~on ~,atalyst, The hydrogenolysis of tetrahydrofuran ~- m,-, ~gs z-'-qu--:es higher temperatures and takes an entirely different c~,-zrse than the hydrogenolysis of furan compounds., Hydrogenolysis of tetrahydrofurans on platinized carbon at 3500C, besides causing .S-~me:--zation to aliphati,,, carbonyl compounds, occurs simultaneously a~ bctb C-0 bonds,, This leads to paraffin hydrocarbons with the same ntim-'-e- cf carbon at-cms as the Initial tetrahydrofurans. On the nickel a1um'-nim ske'e`on catalyst, hydrogenolysis of 2-alkyl- and 2,2-dialkyl t,z,trahyd-.ofurans cccurs at the C-0 bond adjacent to the alkyl groups. Primary alcohols and aldehydes forming as intermediates react to give pa-affLn hyd:rocarbons, the carbon chains of which contain one carbon at,~,m 1--ss than the Initial tetrahydrofuran derivative. The nickel - aluminum skeleton catalyst also causes a more radical decomposition of tetrahydrofurans. thus forming water and gaseous products. The hyiz~,ganoiysis of furans has definite advantages over that of tetra- hydrafurans, sincp ir, the first case aliphatic alcohols and ketones Ca--d 2/3 Oxila--ion cf P.-Ketoacetals by Means of Lead Tetraacetate S/079/60/030/006/032/033/XX B001/B055 A rea:-,ion mechanism is suggested involving intermediate formation of a a1kc;xy r~nyl ketone and subsequent acetoxylation with lead tetraacetate. A methcd was developed for the synthesis of a-hydroxy-p-ketoacetals by trea-.,.'ng a acetoxy-P-ketoacylal compounds with a methandlic solution of hydrogen ch"oride (Scheme 5) (yield 35 - 65%). It was shown that a-a-~,:-toxy--P-ketcacylals react with polyhydric phenols or P-naphth6l formLng 3-acetoxy substituted benzo- or naphtho-pyrylium salts. The data given show that a-pleetoxy-p-ketoacylals are now accessible and may prove important for'the synthesis of several hitherto inaccessible ~neter,)cyc',ic --cmpcunds..There are 14 references: 7 Soviet, 4 US, 3 German I ASSOCIATION: Mcskovskiy gosudarstvennyy universitet (Moscow State University) SUBM'ITTED. June 11,, 1959 r, ~' a r d 1j/ 3 SHUYXIN, N.I.- BELISKIY, I.F.; SHOSTAKOVSKIY, V.M. Catalytic isomerization of V-oxides. Conversion of alkyl tetrahydrofaryl carbinols into aliphatic ketones. Zhur.ob.khim. 30 no-8:2757-2759 Ag 160. (MIRA 13:8) 1. Institut organicheskoy khimii Akademii nauk SSSR. (Ketones) (Methanol) 84869 S/079 % 60/030/010/005/030 BOO O75 AUTHORS: Haryshkina, T. and Shuykin, N. 1. - TITLE: Synthesis of New gs of Cyclopentadiene Homolo PERIODICAL: Zhurnal obshchey khimii, 1960, Vol. 30, No. 10, pp. 3205-3207 TEXT: Due to its difficult production, the chemistry of highly active cyclopentadiene homologs - unlike the cyclopentadiene itself - has hitherto not been thoroughly investigated. The synthesis of cyclopenta- diene homologs described in Refs. I and 2 is reliable but somewhat compli cated. The synthesis mentioned in Ref. 3 has to be improved in order to reach a higher purity and yield of the final products, cyclopentadiene and methyl cyclopentadiene. As cyclopentadiene yields organometallic derivatives (e.g., cyclopentadiene potassium), alkyl or aryl radicals can be introduced into its ring. However, this method only leads to cyclopentadiene hydrocarbons having substituents in the C"2 group. Thus, homologs of cyclopentadiene having Cl-C 4 substituents (Refs- 5, 6) in position 5 were synthesized, as well as gem-substituted cyclopentadienes Card 1/2 S/080/60/0)3/008/0' 12/01A 3 A0031AOOI AUTHORS: Sh-aykin, N.I.1 Pozdnyak, N.A. TITLE: The Catalytic Methylation of Benzene by Methanoll FERIODICAL: Zhurnal prl-kladnoy khimil, 1960, Vol. 33, No. 8, pp. 1904-1906 TEXT: The article Is a continuation of the work published in Ref. 3. A special apparatus was designed for the continuous methylation of benzene by methanol and also for the methylation under a pressure of 20-60 atm. This apparatus makes It possible to obtain catalyzates containing 92-95% alkylate with at least 60% toluene. The apparatus comprises an electric furnace with the alumosilicate catalyst, in which the reaction takes place at 450 and 5000C. The ratio of benze-ne:methanol is 4:1. The alkylate obtained at 5000C consists of 60.5% toluene, 20.3% xyIenes and 19.2% polymetnylbenzenes. The methylation under pressure.was investigated at 400, 45o and 4750C and pressures from 20 to 60 alum. An Increase in pressure as well as in temperature promotes the formation of methyl- benzenes, among them also xylenee. The yield of the toluene fraction increases very slowly in tLhe pressure range from 20 to 40 atm and decreases with a further pressure Increase. The effect of an excess of methyl alcohol in the reaction mix- Card 1/2 9/076/60/034/04/31/042 BOIO/ '.009 AUTHORS: Yegorov, Yu. P. Romadan, I. A., Shlyapoohnikor, V. 1.9 Shudin, N. I. Noscow) TITLE: Investigation of the Structure of the Radical@ of Substances Obtained by Alkylation of Aromatic Hydrocarbons by Means of Alcohols in the Presence of Boron Trifluorido ' PERIODICAL: Zhurnal fizicheskoy khimii, 1960, Vol. 34* No- 49 PP- 888 - 893 TEXT: In a number of earlier papers (Refs. 1-6) 1. A. Romadan described a method for the alkylation of aromatic hydrocarbons with molecular alcohol compounds of boron trifluoride at 165-1700 in an autoclave, or at a pressure of I atmosphere. The results obtained do not agree with those given by other authors, and it in assumed that a different reaction mechanism prevails under such conditions (with- out activator and at 165-1700). For instance, in the alkylation of naphthalene with n-butyl, n-amyl, and n-propyl alcohol alky naphthalenes with normal radicals were obtained. The structure of n-butylnaphthal no was confirmed spectroscopically (Ref. 13) and by a special method of dout riiaim exc &Me at the fiziko-khimicheskiy .Lnotitut im. L. Ta. Karpova (Physicochemical Institute iseni L. Ta. Karpov) in the Card 1/2 Investigation of the Structure of the Radicals of S/076,/60/034/04/31/042 Substances Obtained by Alkylation of Aromatic Hydro- B010/3009 carbons by Means of Alcohols in the Presence of Boron Trifluoride laboratory of A. I. dhatenshteyn. The reaction mechanism can hardly be explained by means of the data concerning the alkylation with iso-alcohols; however, the reaction might take place via an intermediate stage during which olefines are formed. The structure of the alkylation products obtained was determined from infrared spectra; particular attention was paid to the structure of the side chain, which wle investigated on the basis of the frequency of CH oscillations (2800-3000 0m- ). The spectra of the alkyl naphthalenes and diphenyls (Figs. 1,2), the constants of which are given in a table, were recorded by means of an IKS-11 infrared spectrometer with thp aid of an FEOU-15 amplifier. The assumption was confirmed that there is aweak interaction between the alkyl radicals and aro- matic rings. The investigation results given in the paper show that in the way described the structures of the radicals in compounds of the-t e Ar-11 (Ar - phenyl, diphenyl, naphthyl, and R - alkyl groups from C3 to C5~Kay be deter- mined. Papers by A. V. Topchiyev, Ta. 1. Paushking and 1. V. Kurashev'are men- tioned in the paper. There are 2 figures, I table, and 22 references, 13 of which are Soviet. SUBMITTED: September 17, 1958 Card 2/2 A 6 1 1 hr. J:P O)l J cl 0 0 S/020/6 3 /01,-09, o6o AUTHORS: Shukin, 11. 1., Corresponding Member, B011/BO06 A I S USSR, Bellckiy, I. F. '% 'I 'I TITLE: llydro,-enatio~i of Puran Compounds on a Skeleton Cu-Al Catalyst PERIUDICAL: Doklady Ak.,.dcjAi nauk SSSR, 1960, V01131 , Nr 1, pp 109-112 (USSR) AESTRACT: The authors investiLated the effects of pressure and temperature on the sentience of the reduction of unsaturated bonds in various compounds of the furan series. 1) The pressure determines the direction of hydrogenolycis of the furan ring. In the pre ence of skeleton Gu-Al catal"-st' tinder normal pressure# the s VVX silvan rinf; is cleaved at -L'-.,,.o C-0 bond not adjacent to the methyl ,:rou-p. 1:ctliyl --,ropyl ketone is, formed (see scheme: rcferenec 3). itr. n i-inO elozovare, howrover, is possible in both if :Alwii i.-, lilrdro,,enated (G-0 bou(iu 1v2 c,~nd 1,5) 0 in the v..-,:oi- pliase before, bi,t with crossurized hydrogen. o cuanLitien obtained of and c-`,-.no1-2 vary con- ly with 'he prc-_zu:L-e applied. `.3 '~or t11'.._.c-.-;-.'_-vres -)ro- der: 1 t, - ..~l u,ote both the del,:.,-Jr; tion of -,,.ont,-~nol-2 to nethyl propyl ketone, Cr,.rd and the clenv~ :v- of n i,~nt-or i.or: ~tion of n--!)cnt.-,nc and .1ydroCenation of Furan Compounds on a Skeleton Cu-Al Catalyst Card 21-1 68816 S/'020/60/131/01/030/0'0 B011/BO06- water. Pive to ei_ht percent tetrah,, drofuran was formed in all reactions involvinf, prosouri,,,ed hydrogen. 2) The primary re- action in the h.,,drot;enation of alkylfurylc'rbinol!) on skeleton Cu-Al nortizal or increased hydrot~&n pressure is the reduction of the hydroxyl Group, yielding the corresponding q-alkylfurans. Under normal pressure and at 230-250' yields of up to 95Wo are obtained. Further hydro.-enolysis of the ring (at hiC~her temperatures) leadu to aliphatic ketones. Under these conditiono hydroj,,enolysis of the ring is much more in- J/' tenLe in both directions. Aliphatic alcohols and small quanti-7 ties of o(-alkyltetrahydrofurans Pre also contained in the re- action products. 3) In the case of alkyl-o(-furyl ketones and alkyl-(X-furylcarbinols selective reduction of the carbonyl group under retention of the furan ring is possible in the vapor phase. As a catalyst for this reaction, e.g., nickel, de- posited on zinc- or cadnium oxide com be used (Ref 4). However, the sequence of the reactions may also be different (on platinized c_rbon). The effect of okeleton Cu-Al catalyst on the hydroLenation of alky1furyl ketones at nornal. pressure in