SCIENTIFIC ABSTRACT GREKOV, A.N. - GREKOV. A.P.

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• Collection: Scientific Abstracts
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• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

GREKOII, A.N.
Fincs for the excessive use of electric power. Energetik.
13 no.9:37-38 S 165. (MIRA 18:9)
1. Zamestitell direktora Moskovskogo rayonnogo upravloniya
onergeticheskogo khozyaystva.

GREKOVY A.N.
Rates on electric power in agriculture. Energetik 14 no.1:42
Ja 166. (MIRA 19: 1)
1. Zamestitell direktora energosbyta Moskovskogo rayonnogo
upravleniya energeticheskogo khozyaystva.

ov,
Ab
u s s it i/ Stpric bindrincu tind rociMly. L Actallmian V.
glitip
Urekj, t.i ik t , ~rfllq,
7-m" ;'), 11.4-LI10t 1,140 Ittit liummall .- 1, k"fles
Of! mactio" (It PtIN"112, mid 4-
with P-0JN,,~,1(,Crjc1
'
%V,fe stildicil.
it wu th'It till JITV~Wtilr' of
ond 2'
-mallyl In flm~ Wp!wl
imcmCdoll of Ifilf., told milims gtfjtll,4 ill tile 4.4*-voAtiolls,
It III,; I'vol b3lioOlfNizol that 11INFIIA 11111%dulk fit Ow arti-
'111mic ring, tit (fit; lilphell~-1 i1joIcCItle jibatit flic IsiteiiiiiVIkitr
Ixgi-1, (til(I tile It,inColiltill-Ir 141711CLOM of 1!11%
avcomlt~ f(,r thi; clumvAcrlitic reactivity of derlv""
QVQi n( IiijIlletlyl ill CIIII(nlrt 11,1 -t befit
lie till~11(m(Ill.

%II-RE '10 eh 1! n*II A."
yl 1. M
of
th. t.-iiviry of W. nd l7-p, -ith -11,
. Gi
by
rld'I (Ii-IC!.
amillo *rrc fouad ck, E. a-';. zh.wn, t-,,,
-PLC-' --44.5; Oal. 1 11. W,! -4:1,
4~ S.
-I,x7. (eo, u.!is. )o.
-3a.fl: OT~A: 1.777~ 112RIO.
G, %L

L
'~~rort%etftod-10f d0tetminatiort of So trite f*
tit,,tion wig di
"a - I by potentlambtric 13-
;t
itvWenko suid
41; J-
-A
~ '.
i5xp-ng. trunslatioll'
wllnv s R, 10, is
the amitte In 6-20 -1-
viv.ofo in arkillituol. in jjCI it In MOR M,
&dd XDr;
it th; Wine 18 'tWit1to ~pprox. 2-Mu.
md then iLdd "C'
C1102 s
J~dl~mtxdo, MQYA)"to) njake.the sul",
IN N&NOO:
Z
With -',h 0.0 z,q T:.. LZ
(gets to it. Titrate the san, "dent Point 'a at thq4
equil
er mj~roburet. - TI
'stjtt are C&Icd. from'. tj t
Aeliv r a The re
in potential ABIAV r Of MI. of!
I. jUtnp a is the numbei p
"4." O.T.1.00 b whire, , the NaN(h
in"
-0 " ..., -- . , " 1'. ~ JI
an' * 'd T Is C tltty 01 wt. of,the SamPle- 'Uht,
MOs Use
line, mAd b Is thl 11, ljCj concus, of 2-200/'o
an Well -0011. The!
Bp uked equily
AcOll Of 3nilio'e; P-
~e presence Of G-80
rL 0 buIfmngtc acid, I
lied to det yj 4-amino4l,
luct
P%tromaillne; 4.uninoblyhen NI Hosch
ivitroartil, e1 .0.
2
t,.k

MEW Chemistry Organic ChemiIstry
Card. 1/1 Pub. 116 111/23_
Authors Litvinenkot La"Mes Grekov, A. P.
Title The reaction kinetics of acylation of aromatic amines with acid
chlorides
Periodical i khim. zhur. 21/1, 66-70, 1955
Abstract i Three methods of controlling the reaction kinetics of aromatic amines
with acid chlorides were tested for the purpose of selecting one
suitable for the study of the kinetics of aromatic amine acylation in
anhydrous, solvents. The deficiencies of the A and B methods and the
advantages of the C (most suitable) method are described. Some
results obtained by all three methods are tabulated. Six re ferences
3 USSR. 2 USA and I Germen (1933-1954). Tables.
Institution I The A.M.Gorkiy State University. Faculty of Org. Chemistry. Kharkov
Submitted I Maroh 1. 1954

Uss/ Chemi.stry. - Organic chemistr.V
Card Pub-,
1/1 116 ll/~O
Authorri To ukerm an, S. V Litvinenko., L.~ M.; and Grekov, A. P.
Title synthesis of methyl ethers of 4-amino- and 4-amino-41-nitrodiphenic acid
Periodical j Ukr. khhi, zhur. 21/jj,341-343, June 1955
Abotraot i The nthesi-s-tNf.hithert6~unknown.methyl ether of 4-amino-41-nitrodiphenic
d7
aci (methA-1,~~ imino:41-Atrodiphenate) was accomplished through partial-
reduction of 4AI-dinitrodiphenic acid with a methanol-water, solution of
sodium.disulfide and esterification of the product obtained with methyl
alcohol in' oresence.ofhydrogen chloride. It is shown that the melting
point.of methyl m-aminobenzoate is 53-540 which is much higher than the
value known so far. Ten references:: 5 German, 1 English and 4 USSR (1903-
19501
Institution The A. M.. Gorkiy State Univ., Faculty of Organ. Chem., Karkov
Submitted November 12, 1954,

LIT71MIKO, L.M.; GRZKOF, A.P.; TSUZIRKAR, S.T.
Spatial structure and reactivity. Part 3. Restricted inner rotation
and kinetics of the acylation of 2,21-carbonothoxyl derivatives of
4-anizabiphenyl and 4-mmize-41-nitrobiphenyl. Ukr. khta.zhur. 21
n9.4:510-517 155. (MI-11h 9:2)
Llharlkovskly gesuderstyenn" univereltet, kafedra organichookey
khinii. (Acylation) (Biphenyl)

O'V
UM/Chemistry --Organic.chemistry
card 1/1 Pub. 22 19/51
A,Ahore Litvinenko) L* iM.;_,Tsukerman, S. V.; and,Grekov, A. P.
Title, 's Ret*arded internal:-rotation and.the.reactivity of amino derivatives of
biphenyl
Dok. AN SSSR-101/2,-265-2681 Mar Up 1955
Abstract I A study of the acylation reaction kinetics of biphenyl amino derivatives
showed thatthe reaction between the N02 and NH2 groups oriented.in 4,41
positions is considerably weakened if t e interfial rotation of the aromatic
nuclei in the molecule is retarded by the introduction of 2,21-alkyl sub-
stitutes. The steric effect of 2,21-carbomethoxyl groups on.the reactivity
of 4-amino-41nitrobiphenyl was investigated. The results obtained are des-_
.cribed. Nine references: 3 USSR and 6 USA (1934-1954). Table.
.-Institution The A. M. Gotkiy Ftate University, Kharkov
.Pre3ented by: Academician 1. N. Nazarov, November 2, 1954

YlItILMS Of 601110 and nOTO
Tipm~ ~202i,".
Un
tiou of !*chIfjrO~s~?tiIr(IFIndif:r (1) by vhlorin.
N Nil, in 'I dr,
IC6114 bollitig- IIC ~s uot take
Itc
schvim' Cal 3~ '11V~151 as tile U-4,C], Into llrnl~ in-
stead. The desired product was only forin a b41"-'
to 40 g. I-'-Oj"TC4H4NI12 is addW 1.2 1. H:0 and 200 nil
COIIC4.11CI,tl%CrkliXt,IlCatLtI Untildi5LSOlVedtClWill(:d fikiii'll.
to room temp. and the resulting suspeusit)a chlorinaud ividi
s
kirr inF uall 20-1 g. CI is added; the ppt. is -.;cpd- and I
' it
x hot dil. RCI (1.2), in which the d1chinro
Q. td with
defiv. nsol I furnia in,50% yield (after coolitig thc
is: i
ext'), Im 104*. This -(4S g,) suspended it S' in 4SE) rol.
1W and 160 -rrxl.~'cwitd- MSOi is trtated-With 20 g. Nix INOt
in 80 g~ H~O at 80~ stirred 0.5 hi,, fiffemd ond added to 101)
iodine and 100 ml. HIO, then heated on a
steam bath, freed. 61 Iodine with NaliSO. and washed with
.14,0-yieldink 84% .2-chl,)ri)-4-~nitr6lodobenzene, m. 99-
100' (frotil MeON). This (25 1g:) Im-ated to 210* is tr eated
over 40 min. with 25 g. powd. CiL (activated by indnic iii
AfejCO), keeping the temp. wider 220'; after hen;ing
hrs. with stirring, the mass Is extd. with hot IMePh mid the
residue steam dMil, The residue 6- stearn distd, with
superheated steam, yielding 43.5/,
om Meoff). This (6 g.) in tiiy)
chlarcuphenyl. M. 10- (fr
at 40' is treated drouvrise with 30 nil. AI Na-'-,
'_j Y3

A Wt9 C P, Z -tl/, 6:rerv. rt, Y,
soln. ~240 g. Na~5.91W and 32 g S ~r;;t~d will)
H-0 and :2LQ oil. MeOll t2ati) tht:14 dild T,~ 1 1,
with HIO) at 4,P; after 10 lair. t',,e inixt. us A,:;flt6v,!
JICI, th~ "Ivpnts are evapd. and thi: rv~idiit vvd. %vW-.
1: 1 11CI, yiewilig on. coolini Ole "Mlno-4 -CO',
2,2'-dicPJoeubip~eRy&IICI (11), m. 204--~G' Jruni aq. IICI
heated wJth NHtOR it ga!e the free amine, u ght-5y t;,jlid
i
i
th
h N
I
b
i
S
f
Y
il
d
Oll)
(
e
in
ce"s
v
c
e amme
a,
o
e
w
t
rom aq.
,
;
(
TvIeOH yields 11 (3 g.) in a hot
xt. of 6 tal. coned. TICI ant) 15 lit]. AcOll ww, chill.A
mL
-jtO Vvith 0.75 g. NaNOI in 7.5 tut. 11,0, filtvt~i,
to 00, tre.
and ttdde4 slowly to 12 g. Nalill'Ot.11,C) in 12 in., coiw,'
IrCI at 0"; after standing tivernight tile mixt. waa inwdu
alk. with 10% NaOll, the oil sepd., vrasbed xvith 1110 -;d
extd. ivith NfeOYI. (boiling), and the Meoll exts. Werr
treatedmith C and evapd leldlal~ 17 9. syrupy 4-rilro-
4 in' t7 nil
wariti RtOll
2X-diCkIvrvWpArflvl
7
Whicl; ~1
.
.
,
9
ival; treaIC51 With i Ill. 10017C N,H4,1130 and a little U.
Ni (vigurous reuefluu); after the rtiction 11)(Alurateii,
lit-
another nil. NtH,,fjtO ~Illd N! wi4s added and the procesfi
W~S relented until ps PvDlutioli Celtsed Colliploely, Tile
bot so I). via$ filtacd, trcated %vith C, evalid., dritit in
vacuo -tad extil. AvIth Ilur. ctlicr. filld flit' ext. tj,C.,tte(j %Vjtjj
dry liel yielding .39C(()
free atnin-e, ra. M-41 (from aq. MtOll). Diazotizatioll ~j
27 g, in I'll) Int. volit-11. if";O, awl
430 g. 11.0 at 6' with 13.0 g, NUNO, :iml 44 nil 11,0_
atiott 4qd w1dil. tt) -0',)
ii~Aiim wid -1.1 g. K1 iii -1-1

--w

j v
t

V 6
Ot,
-
41: ftn. ~lelded after ustuf treatment 100%,
'Hisrai4dabenza-re, in. 107* (frow u0ll)~ This %we-s t7-c--,ted
;
whh Cu. as described above, at .00-10' (tile te"). is very
cjiFyli), then extd. with hot blePh and the extd. steam
'
0i
d
it
,-%vith supffheated steam up to 22W. 10
fracfi~n,
(
turcollec!~-t sicrarately; the fraction collvctM it. any IW
interval was not homogeneous and the combined pr,xiucts
were nZain steam distd., colitkting at 190~200' 7 g. 4,4'-
tn. f2V (from MeOlti. This
1
4
) in 3S0
l
NI
Oll
d
(3
i
h
-
m
.
g.
c
was ticate
w
t
).2 ml. A1-
!1
NASt in."q. A-feOll (dc-;cxilw-d above), roluxed 10 tuin.,
Pcidified and worked up its usual, yielding
a 11C1 s4~1, ni.
'
'rite latter (CA g.) in IJj ml. AcOli wi(h 3--.5
(Imp, ,I P~ li-
'
dine tric-,ated at 0
with 0.09 g. NaNUt in UAI tul. Culd
coned. 11,SO4 (heated carefully to 60', then chilled), stirred
0.5 fir. i~nd ad&d in 15 mixi. to a suspension of 0.3 g. Cu~O
in 2.5 ml. dry EtOll. rtfluxed I fir., fflltered. tvupd.. trvated
with exc-~ss 10'.7, NaOH and extd. with lit:0. gavu o 23 g.
crude syrupy ah;o obitusied in
poorer yield by treatment of the diazunmin sait with Na-
H.-PO, in ITCI-AcOH~ The pt-,~~iiict wai r~dtwtd %itl~

N ;'njnv-~ ..... dl1L-'4v6;-
Ralley , i, yietdint

QREXOV 'k.
C'S~e.fc bi.14raace and re-wvfly V .1imic"O mrall'n
tiv~gul,[-ain a
11 ad 4-d.", i 4- r--i vinm
G V (State Univ., K~Urk" Ar. 05'kef
-;be.
In acylatina, In Cj;, salr_ of amin,;biphtnyl with 2.21'-
rition f the halog-i ztmwAnd4-pzftior of iliz Nt4gmup.
U-4, I
shown that the haiug~nz in this !,,cttion causc stux
hindrance to rutatiini of the fLngs And thus w~-ikrn the inter-
uction "I NO. and INH, groups in "mition to each ath--
The SUnples, of the araire and the acyl chlaride in CtHs in
2,1 MOW ratio were mixed In u thcrnto5tat, and after
a Vmdttd. pulad a 1:3 roixt. of Bi:MI-C41Iq wai added to
quIne Immeidlmely the unmactrA acyl chloride, methyl,
red in AcOH added, 1:3 IM added to acidify the mitt., the
solvent remowd, and the aq. regidue after addn. of
(d, C.A. 49, Iddioij arialyzed to.- the aromatic amine
With HNO,- For acytlation with p-OjXC.II,C(3CI the fat-
I~Wln; kinetic data W23 phtailicd (ka' kol S. PZ' and AS
given): 4-dminoblO=yl, O.W13. 1.11, WOO. 7.1 X 101,
-43.61 4-am1no4'-nit,-ab1phc!ny1, O.W,05, 0,118, 05M,
1.9 X W', -44.7; 4-lmino-Z2 -dichlornbipheayl, 0.0110A.
5.031, 7800, 0.7 X 10-, -t-3.1;
chtoroblphcnyt, G.Wa*, MiCCW, 9XjO, I 1 .2 X 10-, -42.1;'
ot-c'"14NIttl OMY11, O.W-O' 9700. 5.3 x 104, -30;
0,0131. 044132, 75W. 5.7
x 104. -0.4;
Oza'-w, O.OFTJ201 &M, 6.0 x MI. -43.1; --DrCJI'NH.'
0.057,11, RM, 3.6 x 1w, -alt.8; PhNifs 0.58, -,
T'he Stcric ~E~t F, taLeo s.5 -izy f.-f,bipheny-I
, ~ I _,LCfth;U
at 245- AVd 50*, is C_!Cjj. 1. b, 1 q.S f, taj-
deriv, u 25' and 1 76~1 NO- w-ith t4e2,2',1ibmmod=iv. it
50. AWQhl
A wt 1 9

LITUNBAO, L.M.; GIMOV, A.P.
Ow
Spatial structure aid reactivity. Part 2: Retarded Internal
rotat-Jon, and acylation kinetics of certain biphen5rl amino derivatives
Uch.sar.. XHGU 72:165-175 156. 10:8)
(Stereochamistry) (Acylation)
(Biplienylamine)

C- t~", V)
V
MR / Analytical Chemistry. E-3
Analysis of Organic SubstameB.
Abs Jour: Ref. Zhur - Khimiya No. 2, 1958, 4358
Author : Lltvinenko, L.M., Polakov, V.P., Grekov, A.P.,
Czernetskaya A.M.
Title : Analysis of the Chloranhydride of Acetylsalicylic
Acid.
Orig Pub: Med. prom-at SSSR, 1957, No. 4, 42-43
Abstract: The method consists of the mixIng of the chlor-
anhydride of acetylsalicylic acid solution (1) in
C6H6 with a benzene SO'ut'O'.' Of C6F-5NF.2; the amount
of C6H NH exceeds by- 3 times (in a mol. ratio)
that o? (1). The excess of C6Hc5NH2 ie backtitrated
potentiometrically with a solutIon of NaN02 using
a Pt indicator electrode. The presence of the
N-phenylamide of acetylsalicylic acid in the mix-
Card 112

LITYININKO, L.M.; POLYAKOV. V.?.; GRSKOV, A.P.; CHEWTSKAYA,A.M.
Analysis of aminoantipyrine in tooting aminopyrine production.
Mecl.proik. 11 no.1:46-48 Ja 157. (KLPA 10:2)
1. Kafedra organichookoy khImU KhorIkovskogo universitete Iment
A.M.Gorlkogo i TSentrallneya laboratoriya KharIkovskogo khimiko-
formatsevticheekogo zavoda "Krasnoya zvezda"
(PYRAMIDOUR) (ANTEffRM)

/:H eo v
V.F.;.AUjjgjL -_GHEM'TSXAYA
_A.P..L . A. M.
1;~tisi-m oficetylealicylic acid chloride. Ned.prou. 11 no.4:
4?43~ Ap.117, (NLRA 10:6)
1. 1hartkovskly gosudarstvennyy univeraltat Imeni A.M.Gorlkogo
L KharIkovskiy khtudko-farmtseyticheekly savod "Krasnay svesd&*.
(CHLORIM)

AUTHORS: Litvinenkov L*.M., Tsukermant S.V.) Grekov, A.P. and
Slobodkina, E.A.
TITLE: Space structure and reactivity. IX:Hindered internal
rotation and kinetics of the acylation of 2,21-dicarbo-
isoproxylic derivatives of 4-aminobiphenyl and 4-amino-
41-nitrobiphenyl. (Prostran tvennoye stroyeniye i reak-
tsionnaya sposobnost'. IX: Zatormozhennoye vnutrenneye
vrashcheniye i kinetika atsilirovaniya 2,,21-dikarboizo-
propoksilinykh proizvodnykh 4-aminobifenila i 4-amino-
41-nitrobifenila).
PERIODICAL: 11-Ukrainskiy Khimicheskiz Zhurnal" (Ukrainian Journal
of Me-mistry), Vol-239 No.21 MarCII-April, 1957,
pp.223-227 (USSR).
ABSTRACT: In an earlier communication it was shown that the inter-
action between the NO, and the N112 groups is considerably
weakened in the seconi molecule by introduciz)g the 21,21-
position of the carbomethoxyl groups (1). Further invest-
igations have now been carried out to obtain data for de-
termining the kinetics of the acylation reaction of amino-
derivatives in a benzene solution, especially of dicarbo-
Card 1/3 isopropoxylic derivatives. The 4-amino-41-nitro-2,21-
dicarboisopropoxylbiphenyl and 4-amino-2,21-dicarboiso-

73-2-12/22
Space structure and reactivity. IX: Hindered internal -
rotation and kinetics of the acylation of 29 21 -dicarbo-
isoproxylic derivatives of 4-aminobiphenyl and 4-amino-
41-nitrobiphenyl. (Cont.)
propoxybiphenyl were synthesised and the kinetics of
acylation by n-nitrobenzyl chloride in a benzene solution
were investigated. Table 2 gives results at 25 C and 50 C
for the first compound and Table 1 values for tl,-.e second
compound at tile same temperatures. On comparing the
velocities of acylation of the 2 compounds it can be seen
that the carboisopropoxyl groups possess clearly defined
electro-acceptor character as the velocity constant dur-
irg the transition from one compound to the second com-
pound decreases to half its value. Table 4 gives the
values of tlie factorsF*(*hi6h'was defined by the authors
as the factor of space interlinking weakening. It shows
the effect of weakening of the hitro-group on the amino-
group by the molecular system of the biphenyl due to the
spatial interaction of the 2121-substituents). These fac-
tors are for molecular systems of non-substituted biphenyl
Card 2/3 and its derivatives with ester-grouping in the 2,21-
position. DaUL given in Tables 3 and 4 show that the

73-2-122/22
Space structure and reactivity.IX: Hindered internal
rotation and kinetics of the acylation of 2,21-dicarboiso-
proxylic derivatives of 4-aminobiphenyl and 4-amino-41-
nitrobiphenyl. (Cont.)
carboisopropoxylic derivatives are closely related to
their carbomethoxy-homologues for reasons of their kinet-
ic characteristics and also the effects of the 2,21-
substituents.
There are 4 tables and 7 references, 6 of which are Slavic.
ASSOCIATION: Kharkov State University imeni A.M.Gorlkil
Chair of Organic Chemistry (Kharokovskiy Gosudarstvennyy
Universitet imeni A'.Af.Gor1kogov Kafedra Organicheskoy
Khimii).
SUBMITTED: October 11 1956'.
AVAILABLE: Library of Congress
card 3/3

AUTHORS: Litvinenko, L'.1f. and Grekov, A,P. 73-2-13/22
TITLE: Space structure and reactivity. Hindered internal
rotation and kinetics of the acylation of 4-amino-1111-
binaphtyl and 4-amino-41-nitro-1,11-binaphtyl.
(Prostranstvennoye stroyeniye i reaktsionnaya sposobnost'.
X- Zatormozhennoye vnutTenneye vrashcheniye i kinetika
atsilirovaniya 4-amino-1,11-binaftila i 4-amino-41-nitro-
1,11-binaftila).
PERIODICAL: ,Ukrainskiy Xhimicheskiy Zhurnal" (Ukrainian Journal
of CUemistry), Vol.23, Vo.2, Marcil-April, 1957,
pp.228-232 (USSR).
ABSTRACT: Previously published investigations' on this subject are
mentioned briefly (viz. previous abstract). Analogous
experiments have now been carried out on the kinetics of
acylation of the 2 above compounds. The synthesis and
purification of the compounds, starting materials and
intermediates is described in detail. The samemethod for
measuring the velocity of acylation was used as in the
previous experiments'. (Viz.,previous abstract)'. Data are
tabulated in Tables 1 and 2. Table 3 summarises previous-
Card 1/2 1y obtained data for the kinetics of acylation'. It shows
that the velocity of acylation of the aromatic amino-gruup

Space structure and reactivity. X:Hindered internal rota-
tion and kinetics of the acylation of 4-amino-1,11-
binaphtyl and 4-amino-41-nitro-1,11-binaphtyl. (Cont'.)
linked to the binaphthyl residue, is considerably smaller
than in the case of analogous biphenyl derivatives. Table
4 gives the F-factors for the molecular systems 1,11-bi-
naphthylp unsubstituted biphenyl and its derivatives with
substituents in the 2,21-position. (For definition of F
see previous abstract). The ultraviolet absorption
spectra of three isomeric binaphtyls - 2,21-binaphtyl,
1,21- and 1,11-binaphtyl it was shown that the effect of
spatial hindrance is almost absent in the case of 2,21-
binaphtyl and shows a maximum for 1111-binaphtyl'. The
authors point out that the value for the activation entropy
increases during the transition of 4-amino-41-nitrobiphemyl
to its binaphtyl analogue.
There are 4 tables and 14 references, 7 of which are Slavic'.
ASSOCIATION: Kharkov State University imeni A'.M'.Gortki, Chair of
Organic Chemistry (Khar,kovskiy Gosudarstvennyy Universi-
tet imeni A.M.Gorikogo, Kafedra Organicheskoy Khimii).
SUBMITTED: October 1, 1956.
AVAILABLE: Library of Congress
9!~~2/2~

483
AUTHORS: Litvinenko, L. M., and Grekov, A. P.
TITLE: Spatial Structure and Reactivity. Part 6. Kinetics of Acylation
of 2-Amino, fluorene and 2-Amina-7-nitronuorene (Pm stranstvennoye
stroyeniye i reaktsionnaya sposobnost'. VI. Kinetika atsilirovaniya
2-amino-fluorena i 2-amino-7-nitrofluorena)
PERIODICAL: Zhurnal Obahchey Khimii, 1957, Vol. 27, No. 1, pp.234-239 (U.S.S.R.)
ABSTRACT: In order to establish the relation between spatial configuration
and reactivity in bi-nudear aromatic amino-nitm derivatives,
comparative studies were made on the kinetics of acylation reaction
for 4-aminobiphenyl and 4-amino-4'nitrobiphenyl on one hand and
derivatives of these amines containing various substitutes in
2,21-positions on the other hard. It was shown that an increase
in the angle between the surfaces of benzene rings during the
change from 4-amino-4-nitrobiphenyl to its 2,21-derivatives is
due to the steric hindrances between 2,21-substituents leading
to a considerable weakening of the reaction of the N02- and NH2-
groups oriented in 4,41-positions of the molecules Qf the compounds
Card 1/2 indicated. It was found that the fluorene system being iwre planar

Spatial Structure ard Reactivity 483
than the biphenyl system is a much better transmitter of electronic
effects of the substituents. Attention is called to the fact
that 2-aminofluorene is similar by its kinetic parameters to its
very close analogue 4-amino-2,21-dimethylbephenyl whereas 2-amino-7
nitrofluorene differs from its analogue - 4-amino-41-nitro-2,21-,
dimethylbiphenyl by its energy and activation entropy values. Thi
kinetic acylation data for 2-amino-7-nitrofluorene are in many
respects analogous to the kinetic data of 4-amino-41-nitrobiphenyl,
Four tables. There are 16 references, of which 10 are Slavic.
ASSOCIATION: The Khar1kov State University (Kharlkovskiy Gosudarstvennyy
Universitet)
PREMNTM BY:
0 UM IT T M i jfflu-417 14, 1956
AVARAMB;
04r4 g1g

4 ?
6-K V
AUTHORS: Litvinenko, L. M., Grekov, A. P. 79-11-43/56
Shapoyal, L. D.
TITLE: Synthesis of Some Amino- and Nitro-Derivatives of
Diphenyl Which Have 2,21-Dimetoxyl- and 3)31-Dimethyl-
Groups (Sintez nekotorykh amino- i nitroproiz-,rodnykh
bifenila, soderzhashchikh 2,21 - dimetokuillnyye i 3131 -
dimetillnyye gruppy).
PERIODICAL: Zhurnal Obshchey Khimii, 1957, Vol. 27, Nr 11,
PP. 3115-3122 (USSR)
ABSTRACT: For kinetic investigations performed In the laboratory
2,21-dimetoxyl- and 3,31-dimethyl-derivatives of
4-aminodiphenyl and 4-amino-4'nitrodiphenyl had to be made
available. It was found that the synthesis of the metoxyl-
derivatives is most expediently to be realized according
to scheme 1 (see formulae). The easily accessible
o-tolidine served as starting product for the synthesis
of the methyl derivatives. Their synthesis is represented
by scheme 2 (see formulae). The followine- of the inter-
mediate and end products produced were hitherto not
described in publications: 4,4'-dinitro-2,21-dimetoxyaiplienyl,
Card 1/2 4-amino-4'-nitro-2,21-dimetoxydiphunyl, 4-amino-2,21-

Synthesis of Some Amino- and Nitro-Derivatives of Diphenyl 79-11-43/56
Which Have 2,21-Dimetoxyl- and ',31-Dimethyl-Groups
dimetoxydiphenyl, 4-ainino -2,2-dimetoxydiphenylo 4-nitro-
3, 3 '-dime thy1diphenyl (and 4-amillo-3, 31 -dime thyldiplienyl)
Thus now rethods are suggested for the syntheois of a
number of intermediate products which are necessary for
the production of th,~ given diphenyl derivatives aGd some
already known methods are more precisely d,~!fined.
There are 13 references, 9 of which are Slavic,
ASSOCIATION: Khartkov State VAiversity (Kharlkovskiy trosudarstve%ny~
univ(,--sitet).
SUBMITTED: November 9, 1956
AVAILABLE: Library of Congress
1. Diphenyl - Derivatives - Synthesis
Card 2/2

AUTHORS: Litvinen-ko, L. M., Grekolr, A. P. 719-12-3c,/43
-r-
TITLE: Spacial Structure and R,-,~~tivity (Pro3transtvennoye stroyeniye i. reak=
tdmnVa sposobnost').
XI. Slowed Down Inner Rotation and the Acylation Kinetics of 2)21-Di=
thyloxyd- and 3,31-Dinethyl Derivatives of 11-krninodiphenyl and
nG-4 Nitrodiphenyl (XI. Zatormozhennoye vnutrenneye.vrashcher-iye I
kinetika atsilirevaniya 2,21-dimeteksil7nykA - 1 3,31 - dinetillrlykh,
proizvodrykh 4 - aminob:Lfenlia J.. 4 - amino- 41 - nitro-bifeniia).
PERIODICAL: Zhurnal, Obshchey KhJmii, 19571 Vol. 27, Nr 12, pp. 3332-33-13 (MSH)-
ABSTRACT: In order to complete and further develop the concept-ion--; put, dom. by
the authors in earlier works the present work mentions the results
concerning the kineticz of the acylation of 2,2-dimetoxy- and 3,3-44~
methyl derivatives with p-nitrobenzoylchloride in benzene solution.
These derivates are: 4-amino-2,2~41imethoxydiphenyl,
methyldiphenyl and 4-amino-41-nitrc-3,31 - dunethyliphenyl. At tht-
same time the kinetics of m- anisidine was investigated under Lhf., sa-,
me conditions (see formulae). These investigations served the purpo.-7e
of explaining the dependence of the spacial stracture on the reactiz
vity. The authors showed that the transfer of Lhe eloctron irtevac,
Card 1/2 tion of the NO 2- and NH2 groupe (in the positions 14 and 0) the into-

Spacial- Structure and Reactivity. 79-12-30/43
XI. Slowed Down Inner Rotation and the Acylation Kinetics of 2,2'-D-imethyli-,.-Cjl-.
and 3,31-Dimethyl Derivatives of 41-kminodipheryl and 4-Amino-lt Nitrod4pnenyi.
lecular system of biphenyl becomes weaker with the introductirwn c-F
L
2,21-iimethe&y substituent.?, which is caused by the spacial diff-CU-1-
ties developing on this occasion as they cause the change of the geo=
metria configuration of the biphenyl molecule. This is, however, not
the case if in the place of the molecular system of the unsubs"Ituted
biphenyl there is that of the biphenyl with 3,37 substituents. ThR
latter is explained by the faet that the 3,31 substituent3 do not
cause any remarkable effect on the inner rotation of the benzene nii-
n.lei in the molpcules of biphenyl and its derivatives.
There are 7 tables., and 15 references, 9 of which are Slavic.
ASSOCIATION.- PmipIkoV State University (Kh;,,,r7kovskiy gesuda-stvennyy universitet).
SUBMITTEr: Novembpr 9, 1956.
AVAILABLE-. Library of Congress.
1. 2,21-Dimethyloxyl derivatives - Acylation
Card 2/2 2- 3,31-Di.,nethyl derivatives - Aiylation
3. Molecular rotation - Analysis

GREKOV, A. F., Cand Chem Sci - (dies) "Effect of delayed internal
revolution upon 4fte reactive aRpazity capability in the series of
amino derivatives of biphenyl." KharIkov, 1958. 20 pp (Min of
Higher Education UkSSR, KharIkov order of Labor Red Banner State
Univ im A. M. Gor'kiy)j 100 copies (KL, 16-58, 116)
-13-

AUTHORz Grekov, A.P.
TITLE: On D.I. Marlyano73klv~s krtl,--.',e "The Ele~tri---ai Brakirg
of Drilling Winche314 (K sl-at'ye D.J. A-lar yanovsko,- "Elek--
tricheskoye tormozheniye burorykh lebedok")
PERIODICAL~ Erergeticheskiy bjulletent, 19~8
Nr 3
pp 7-10 (USSR)
.
,
ABSTRAM In his article., D.I. Mar'yanovsk-y preferred the synchroroi.~
'
MST.-321-18/1-2 br
ak1-ng machine, constructed by thp KhEMZ plan-
and proposed by Kogan,. and attacked the hydraulic sy3rk-M f'.):,
its 'lack of fluid control and th~7 electrr,-magnet-4:7 methoi
sinze it needs air or liquid cooling. The author reviews
the characteristics of the synchrcnous IAST-~2 ... 8./- . ger,-?
toi braking machine ani t.re MT--4000, mag-iet-;- brake Th-
results are plottei in graph f-rm- re7, /mi!:, versli; brakirg
moment. The magretic brake has steady Dvera--'. braking qaa-
lities ahd operates well a~- !,-~w rev, the synchriDnous gene.-
rator brakeS poirly at lr~w rq~-. and is actua-21y danger,:~us
,~,ver 425 rpm. The author concludes that the magnerfe brake
is preferable by virtue -)' i-s better and mo-e ever. braking
qualitie,s, less we.~ght and simpler cciistructi:,n. Synchr,7~-
Card 1,12 nous generator braking assemblies are not tc be -re-mmended

9 0 5 8 - 7/,-- 3 /9
On D.I. Mar:yanovskiy~s Article "The Electri-al Braking nf Drilling W:.-,-
ches"
and the hydraulic method may have a certain applicatiLon
after improvements are carried o"'.
There are 2 graphs,, I phot.~ and 1 Soviet referen-e.
1. Winches--Development 2. Magnetic brakes-Applications
Card 2/2

RRS Shimanskaya, N.P. , Ki limov, A.P. and Grakov, A.P.
U TH,
............
TIT LS Investigation of the Scintillation Properties of V`erimin D;orivatives of
1,3,ti-Oxadiazole (Issledovaniye stsiatillyatsionnykh svoystv nakotoryidi
proizvodnykh 1,3,4-okiadiazola)
Optiim i Spa4:troskoplya, 1959, Vol ti, Nr 2, -j,) 194-197 (US5Rj
-ynthesized a large nu-mber of moricaryl and diaryl derivatives
1:,')T-1-',T. The authoru .
of 1,3,4-oxadiazole and studied their scintillation %.ind luminescent
properties. Th-jy found several now scintillators inciuding
2-(I-r.aL-hthyl)-5-(4-'oir)horiylyl)-l.3,,I-oxadiazole (!21BD) and
(lit-PIM). The present
tion of
'XLn-cr raVOL-CS i.,ousuramunts on nhotolumines can c-o and scintilla
LNBD and t.'t11W, as well as of 2--)henyl-5-(4-biphonylyl)-1,3,4-oxadiazole
(PED) -v--as first obtained by Hayos et al. kRof 1). LNTBD and
1-ZtM were :-,pithesized by %ittn. or the reaction
0
1.1 N
-n-G- r -4Ar-W ~rv
I C &H,41 ii 0

C 0.-V/51-6-2 -11/39
investi&%tion of the Scintillation Froporties of Certain Derivatives of
1,6,4-Oxadiazole
(notation is the satae as that used by Hayes at al. in Refs 1, 2). Each
Gubatanco was purified by recrystallization from solution and
chromatography on aluminium oxide. The authors measured the relative
intensity and photoluminescence spectra and the integral scintillation
yield in toluene and polystyrene solutions of various concentrations.
The absorption and luminescence spectra of AM, LNBD and PBD in
heptane were also measured. The spectra and intensities of luminescence
were measured by means of a SF-4 spectr o photometer, used as a monochromator
and a photomultiplier FEU-18. A mirror galvanometer M-21 was used to
record the photo-current. The integral scintillation yield was determined
from the choto-currant of a FEU-19 ohotomultiplier to whose window a
radioactive AS110 source (0.1 millicurias .) ~%us fixed. The absorption
s-jectra were measured by means of a SF-4 spoctrophotomotar. The ro3ults
are given in Figs 1-11. The concentration dependences of the intensity
of photoluminescence and of the scintillation efficiency vere similar
for all the three substances in polystyrene (Figs 1-5). In toluene
solutions MtPPD shows a stronger concentr,).tion quenching of luminescence
(Fig 4) than the other two substances (Figs 5 and 6). The absorption
2-ri 2,1-i spectra of the three substances are shown in Figs 7-9, together vath

s 0-v/51 -tj -2
In"rertiGubion of the Scintillation Properties of Certain Derivatives of
1,3,,k-C,xajjazole
their luminescence spoetra. Figs 7-9 show that the three substances when
dissolved in heptane cbay the law of symmetry bet%oen the absorption and
the luminescence ape--tra. 'rho absorption maxima of PBD and 1XBD viere
found to coincide with Vne emission maxima of polystyrene. The optic~um
concentrations and the scintillation efficiency at these concentrations
are given for all the three substances in a table on p 197. This table
contains also data on pTP (p-torphenyl) and pTP + POPOP scintillators.
All the three n&r substances (LIIBD, MtPPD, PBD) are better scintillators
than pTP or pTP + FOPOP, Of the former three compounds LXBD and
MtPPD are bettor than PBD. There are 11 figures, 1 table and 5 refer?,ncas,
3 of which are Soviet and 2 4nglish.
SUB,I,'.lTi:Z.U: February 17, 1953
,a rd 3/3

SOV/51-7-3-12/21
AUTHORS Shimanalcaya, Y.P., Kilimov, L.M. and
Azen, R.3 .
TI TIA Plastic Scintillators with Additions of Lryl Derivatives of
1,3,4-Oxadiazole.
11,21,1K OD I G~,.L: Optiku i spektrorkoplya, 1959, Vol 7, Nr 3, pp 366-370 (USSR)
BS'I'MCT: The authors ueaaured the scintillation efficiency and recorded the
absorption and luminescence spectra of solid solutions of eight
2,5-aryl derivativas of oxadiazole in polystyrene. These derivatives
wero:
2-(4-biphenyly1)-1,3,4-oxadiaz *ola (BD);
2,5-di-(4-mothoxyphonyl)-l.3,4-oxadiazole (LitfUtPD);
2-phanyl-5-(4-biphanylyl)-1,3,4-oyadiazole (M),
2-phenyl-5-(J-naphthyl)-1,3,4-oxadiazole (dNPD),
2-uhanyl-5-(2-naphthyl)-1,3,4-oxadiazole (OUPD);
2.5-di-(4-biphonylyl*-1,3,4-oxadiazole (A);
2-(4-bli3hanylyl)-S-(2-naphthyl)-1,3,4--oxadiazole (MBD)
2-(l-naghthyl)-5-(2-naphthyl)-1,3,4-oxadiazolo (M)CM).
Ca rd 1/'I Tho BD comDound -ms obtained by heating of 4-biphanylylhydrazide 'with
ethyl aster of o-fomic acid (Ref 2). The other seven compounds were

SO-V/51-7-3-12/21
flaudc Scintillators rith AditionG of aryl DoriviLtivau of 1,3,4-Oxadiazole
1
prepared by cyclizttion of the corrosponding dihydrazides by heating
with phosphorus oxychlorido (Rof 3). illl cam.)ounds ware purified by
r-3-crystr.,Ilizatiou and chrvi*.ator-,r-tphi c tro,14,ni, alit. The scintillators
were in the fona of polystyrene discs t6 appropriate 1,3,4-oxadiazole
derivative added to thara.) of 20 la.!i diu.LDtar .-nd 12 iwki height; they viere
prepared by hi -h ~wapvaturtj polyl-ijrlz~~tior% in aii -ttaosphere of nitrogen.
The )OWorotion -s-)actra ,!;ire recorded by .~.-aans of a a pactro photometer
6F-4. The 1u,--i*.r-.3j~:arca :5peczra !-srf obtained by titans of the same
instrument used as a -.inrochraaator; they nare recorded photoelectrically.
The scintillation sfficioncy vat, deduced from the current of a FEU-19
nhotomultinliar. A sample of A6110 of 0.1 itcurie intensity -a-as used as
I-,is so-arce of -3xc-.t+,)L"ion. The absorption spectra of the eight
cxadiazc13s are In Fi,-z 1 (curves 1-4) and 2 (curves 1-4). The
luminazz-3tica soactrda of polystyrene is shown as curve 5 in both
figures. The greatest amount of ovarlA-)oing of the absorption spectrum
--i IV,
ti-3 ba,~ineziaance s-p3ctrum of polystyrene w-is exhibited by the
c--nooureJu 71th 1-nanhthyl radical, that is the compounds OVFD, OQ11pb-D
-6 Q'BD Fia-s 3 and 4 show the photolutaines can ce spectra (excited
tAth 253 and 313 mit mercury lines'). Here again the oxadiazoles with
-1-naphtftyi radical show the greatest ardount of overlap vjith the maxim=
of the F-W-19 s3nsitivity. Th3 depondence of the scintillation

SOV/51-7-3-12/21
Plastic Scintill-ators i-tith 20ditions of Aryl Derivatives of 1,3,4-oxadiazole
efficiency orl the concentradon of the oxadiazoles (Fig 7) shovs that
th-, camt7otinds AUD, *MITD, AMW and BBD are the most efficient. In a
table on p 369 the authors list the absorption and luminescence
- la
maxia (cola 3 and 4), the concentration oxadiazole in polystyrene
(col 5) and the scintillation efficiency (col 6) of the eight oxadiazole
d,3riAr-'~+ives listed above and eight other 1,3,4-oxadiazole derivatives
studied earlier. The authors found that the scintillation efficiency
of organic compounds in plastics is detemined primarlLy by their
absorption and luminescence spectra and their luminescence yield. The
scintillation efficiency may be measured in relative units by Swank
and Buck's wathod (Ref 8), allowing for the overlapping of the
lurainescsace &p
pectrum of the base (polystyrene) and the absorption
sp
,octrivi of the additive (oxadiazole derivative), the photoluminescence
yield of the additive and the efficiency of recording of the emission
Dy the additive. The bast scintillation property among the diaryl
darivettives of oxadiazole wore found in the compounds with 1-naphthyl
and biphanylyl, radicals. ;aiong the sixteen compounds listed in the
(;a rd 31"'1. table on p 369 the following ivere found to be most efficient in

SOV/51-7-3-12/21
Plast-ic Scintillators with Idditions of Aryl Derivatives of 1,3,4-Oxadiazole
plastic scintillatorst
2,5-di-(4-biphanylyl')-1,3,4-oxadiazole (BBD);
~,5-di-(l-naphthyl)-1,3,4-oxadiatole (tVIOD);
2-olienyl-S-(4-inothoxyphonyl)-l.3,4-oxadiazole (UtPPD);
2-Z,I-bi--heriylyl)-5-(2-naphthyl)-1,3,4-ox,-Ldiazole (cUTBD);
2-p~anyl-5-(l-n,,tphthyl)-1,3,4-oxadiatole (ILTIPD).
There are 7 figuras, I table and 9 references, 5 of which are Soviet,
,I Onglish, 1 Gaman and 1 translation into Russian.
~rli: WISD; 13C;.mbar 26, 1958
-ard

31"'i-iTILIP O.P.;- G~~;"."Iuvq A.P.
helation Litween tho chwdc.~d st';,vcb,-:3 ~.nd tha 3ci-ltil..-ation
offici~nxy of l,3,4-oxac:-.Lazole dorh%'Aivou. Optu. i spoktr. 7
no. 6:824-"-*26 D 159. (t: M. 14:2)
(0.,:,~diazole) (Scintillation (Phr3ics))

5 (3)
AUTHORS: Grekov, A. P.p Azen, Ro S. SOV/79-29-6-49/72
TITLE: Synthesis of the Asymmetric 2,5-Diaryl Derivatives of
1,3,4-Oxadiazole (Polucheniye asimmetrichnykh 2,5-diaril-
proizvodnykh 1,394-oksadiazola)
PERIODICAL: Zhurnal obshchey khimii, 1959P Vol 29f Nr 6t
pp 1995-1998 (USSR)
ABSTRACT- The investigation of the tendency of a great number of
various organic products towards scintillation led to the
discovery of new promising compounds, among them also the
oxadiazoles (Refs 1-3). In order to investigate the dependence
of the structure on the scintillation activity in the series
of the oxadiazole derivatives and to find new compounds very
active in this respect, the authors synthesized the
asymmetrical 295-diaryl substituted 1,3,4-oxadiazoles which
have not yet been described in publications. The hydrazides
corresponding to them were also new. The following scheme was
used for the synthesis of these compounds;

Synthesis of the Asymmetric 2,5-Diaryl Derivatives SOV/79-29-6-49/72
of 1,3,4-Oxadiazole
0 01 0 N-N
11 ArICOM, 3
Ar NH - NH Ar- UH-11H- IC' - ArIPOC1 ArIl 114x'.
2 C H N'
5 5 0
In this scheme, two stages are of great interest from the
preparative point of views the formation of the asymmetric
diaryl hydrazide and its closing to the oxadiazole ring. In
the first stage the formation of the asymmetric hydrazide in
pyridine may be complicated by the fact that besides the main
product sometimes also the symmetric hydrazide is obtained.
In the second stage a short heating of the corresponding
diaryl hydrazide with POM 3 only until its complete
dissolution is sufficient for the formation of the oxydiazole
ring. A further heating leads to a deterioration of the
product. All hydrazides synthesized are colorless crystalline
compounds. The following compounds were newly synthesized:
2-phenyl-5-~I-naphthyl), 2-0-biphenylyl-5-0-naphthyl-,
2-pbonyl-5-(2-naphthyl)-, 2-(4-biphenylyl)5-(2-naphthyl)-,
Card 2/3 and 2-(I-naphthyl)-5-(2-naphthyl)-1,3,4-oxadiazole as well as

Synthesis of the Asymmetric 2,5-Diaryl Derivatives SOV/79-29-6-49/72
of lv3v4-Oxadiazole
their hydrazides. There are 8 references, 2 of which are
Soviet.
ASSOCIATION: Vsesoyuznyy nauchno-issledovatellskiy institut khimicheskikh
reaktivovq Kharlkovskiy filial (Kharlkov Branch of the All..
Union Scientific Research Institute of Chemical Reagents)
SUBMITTED: April 22, 1958
Card 3/3

15 (3)
AUTHORS: Grekov, A. P., Shvayka, 0. P., SOV/79-29-6-55/72
Yegupova~ L. M.
TITLE: Investigations in the Field of Organic Scintillation Substances
(Issledovaniya v oblasti organicheskikh stsintillyatsionnykh
materialov). II. Synthesis of the 2-Aryl Derivatives of 1,3,4-
Oxa-Diazole (II. Sintez 2-arilproizvodnykh 1,3,4-oksadiazola)
PERIODICAL: Zhurnal obahchey khimii, 1959, Vol 29, Nr 6, pp 2027 - 2032
(USSR)
ABSTRACT: For the systematic investigation of oxa-diazole derivatives a
series of new 2-aryl substituted 1,3,4-oxa-diazoles of the gen-
eral formula N - N
11 11
R-\ has been synthesized, where
0
R-4-H3CO-C6 H49 4-H3cc6H4A - H 2NC6H4 , 4-(H 3C)2 NC6H4, 4-BrC6H4,
4-H5 C20OCC6H V 4-H5C6C6H4, 2--furyl. Except C. Ainsworth (Ref 1)
nobody has analyzed compounds of this series. The synthesis of
Card 1/3 the majority of the products which have been described here has

Investigations in the Field of Organic Scintillation SOV/79-29-6-55/72
Substances. II. Synthesis of the 2-Aryl Derivatives
of 1,3,4-Oza-Diazole
been carried out by conversion of the corresponding hydrazide
by excess ethyl ortho-formates expressed by the scheme;
0 H 0 C N N
0 (C H 0) CH 5 2
2 5 3 11
R-C R-
I R-C-NH-N--CH
"~ NHNH2 0
The synthesis of the oxa-diazole in question took place at the
boiling temperature of eater. It has been separated from the
reactants after removal of the excess ortho ester by distilla-
tion in a vacuum if its melting point was-low enough, or by
way of crystallization. The synthesis of the 2-aryl derivatives
of the 193,4-oxa-diazole from hydrazides afidethyl ortho-for-
miate is possible only if the functionally substituted groups
in the initial hydrazides are inert against ortho ester. There-
fore it was not possible to synthesize in this way for example
compounds like 2-(4-aminophanyl)-and -2--(4-cxy-phenyl) -1,3,4-
Card 2/3 oxa-diazole. To obtain such derivatives, the corresponding

investigations in the Field of Organic Sciutillation SOT/79-29-6-55/72
Substances. II. Synthesis of the 2-Aryl Derivatives
of 193,4-Oza-Diazole
changes of functional groups have been carried out only in the
obtained oxa-diazole. In this way the 2-(4-aminophenyl)-1,3,4-
oxa-diazole has been synthesized by reduction of nitro-phenyl
oxa-diazole with the help of pheny1hydrazine according to
scheme 2 (Ref 2). The 8 newly synthesized 2-aryl derivatives
of the 19394-oxa-diazole are colourless, crystalline compounds
insoluble in water and soluble in alcohol, benzene, and toluol.
There are 12 references, 1 of which is Soviet.
ASSOCIATION: Khartkovskiy filial Vsesoyuznogo nauchno-issledovateltskogo
instituta khimicheskikh reaktivov (Kharlkov Branch of the All-
Union Scientific Research Institute for Chemical Reagents)
SUBMITTED: May 24, 1958
Card 3/3

50) SOV/79-29-9-55/76
AUTHORS: Grekov, A._P., Kulakova, L. N., Shvayka, 0. P.
TITLE: Investigations in the Fleld of Organic Scintillators.
IV. Synthesis of Para-subst-ituted 2,5-D_4phenyl-1,3,4--o)radJ_-
azolc
PERIODICAL: Zhurnal obshchey khimii, 1959, Vol 20., Nr 91 PP 3054-3058
(USSR)
ABSTRACT: In order to investigate systematically the relation between
the scintillating properties and the stxraeture of the oxadi-
azole derivatives the authors syn'uhe3ized the following hither-
to unknown derivatives of 2,5-diphenyl-1,3,4-oxadiazole with
different functional substituents which are in the para-
position of one of the phenyl cycles:
N-N
R = NO NH NHCOCH OH, OCH
JL