SCIENTIFIC ABSTRACT LAPITSKIY, YU.YA. - LAPKIN, I.I.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000928620008-6
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 31, 2001
• Sequence Number: 8
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT


S/12o/60/000/005/031/051
E032/E314
AUTHORS: Lapitskiy, Yu-YAy and Slivkov. I.N
TITLE: -A ieam Control Device for the Output of an
Accelerator/4
PERIODICAL: Pribory i tekhnika eksperimenta, 1960, No. 5,
pp. 121 - 123
TEXT: In the operation of charged-particle accelerators it
is necessary to have continuous information about the form and
position of the beam at the output. The dev:Lce described in
the present paper was designed to provide the control desk
with this information. The device consists of six.!screen-ed
probes, each having a diameter of 1 mm, which are fixed to a
disc which rotates eccentrically with respect to the beam and
In the plane perpendicular to it with a velocity of 1.5 rps.
The probes are fixed to the disc in such a way that their
current detectors intersect the beam along six different
trajectories spaced at a distance of about 2 - 3 mm. The
current detectors are earthed through a common resistor and
the potential difference across the latter is fed into an
Card 1/2

S/120/60/000/005/031/051
E032/E314
A Beam Control Device Eov the Output of an Accelerator
oscillograph. In this way the current-density distribution can
be obtained in Six practically parallel sections of the beam.
A special photo-electric device produces a marker signal
indicating that one of the probes passes across the centre of
the beam. A schematic drawing of the device is shown in
Fig. 1 and a typical oscillogram is obtained in Fig. 2. The
beam control unit is being used with the high-voltage accelerator
of the Institute of Chemical Physics of the AS USSR.
-There are 2 figures and I Soviet-reference.
ASSOCICkfi Institut khimichaskoy fiziki AN SSSR (Institute
ON:
of Chemical Physics of the AS USSR)
SUBMITTED: August 14, 1959
Card 2/2

)UUSHEVY I.F.; POFKOVICH, A.V.; ROSHALI, G.Ya.; ZHELEZNIKOV, F.G.;
LYSOVJ A.V.; TSEPAKIN, S.G.; SOMSHKOV, A.I.; BOTTSOVy A.S.;
ASTARBOV., Ye.Ya.; MIRONOV, B.V.; I!g~TSM, Yu.,Ya.;
GATALIN, V.A.; KHOROSHKOV, V.S.
Electrostatic accelerator-injector in a proton synchrotron.
Prib. i tekh. eksp. 7 no.l+-.37-45 J1-Ag '62. (MMA 16--4)
1. Nauchno-iseledovatellski7 institut elektrofizicheskoy
apparatury Gosudarstvennogo komiteta po ispolIzovaniyu
4toiinoy energii SSSR i Institut t6oreticheskoy i eksperimentall-
noy fiziki Gosudarstvennogo komiteta po ispollzovaniyu ato=oy
energii SSSR.
(Particle accelerators) (Syncbrotron)

VLADIMIRSKIY, V.V.; KOSHKAREV, D.G.; ONOSOVSKIY, K.K.;*"..
SMOLYANKINA, T.G.; S14IIUIITSKIY, V.A.; DANILITEV, Ye.N.;
LAZAREV, N.T.j PLIGINY Yu.S.; RATAL33, V.A.
OTon guiie and beam injection system in aprotoA.'sYnchrotron.
Prib. i tekh. _ eksp. 7 no--4:70-75 Jl-Ag 162. (MIRA 16:4)
1. Institut teoreticheskoy i eksperimentallnoy fiziki Gosu-
darstvennogo komiteta po ispollzovaniyu atomnoy energii SSSR.
(Synchrotron)

VLADIMRSKIY9 V.V.; GOLIDIN, L.L.; PLIGIN, Yu.S.; VESELOV, M.A.;
TALYZIN, A.N.; TARASOV, Ye.K.; KOSHKAREV, D.G.; LAFITSKIY,
Yu.Ya.;,.BARABASH, L.Z.; KLEOPOV, I.F.; LEBEDEV,, P.I.;
A.A.; BATALIN, V.A., ONOSOVSKIY, K.K.; UVAROV, V.A.;
VODOPIYANOV, F.A.
Adjustment of acceleration in the 7 bev. proto- synchrotron.
Prib. i tekh. eksp. 7 no. 4s2-48-255 Jl-Ag '(2. (MJRA 16-4)
1. Institut teoreticheskoy i eksperimentallnoy fiziki Gosu-
darstvennogo komiteta, po ispolIzovaniyu atomnoy energii SSSR.

A) 46-
ACC ~-N%, A26032259
SOME CODE:,, UB/3138/63/ODD/382/ODOI/OD12
yu Ya
Khoroshkovp V# So;- CbiosTTkly
Li
-ORG:: ~tvi
IMM." 7he iiaJector~ of - theI oton synchrotron
SCURCE:: USSR o'~ GospdarstvexaW komitet po i 'z=yu atonnoy energli. Aut
:166ratldheekoki eksperimentallnMliziM. Ddklady., - no. 381j. 1W. 1whektor
~Airotonnogo-Ginkhrotrona ITEFp 1-12
41.
tA~:' Yroton accelerator,:synchrotron, parbicle accelerator component, elec-
:.troitatlc AFAX4,m/ -20-5 electrostatic generat
-;'TI~.ABSMCT-.'. '-The authors d6scribe the inprovemmts recentlymade on the ITEF proton
-brotroniNector,.vlsichoiiginal3~k-Oas a revamped ZG-5 eleetrostatic generator.
,Ynf;
~Ihe injmtbr is deBigned for a two-week operating cy6le,--writh n4nim- maintenance
shut6a~' (32 bou'ra) and minimm low-voltage preconditioning (2D-30 hours) . The
vacuum systIem and theion'systemlsource, opticalsystemand ion transporter) are
described An detail.* With the ion source delivering'a ~~4wnm e current of 0..3 a,
~:~Ue injeloitor opmt,eB at prepent vith a generator voltageof 4 Hey a do ion current
3.- Ps' an unseparated beam pulee of 40 ma, at & pulse ion
..3 of 404seas a proton
Pulse of 8-10 ma into the synchrotron at a pulse duration 2D psec~ and an energy
-3/2.
C
ara

SOURCE CODE:
1/65/000/024/0048/00213i
AUTHOR., Lapitskiy, Yu. Ya.; Khoroshkov, V. S.
ORG: none
TITLE: Proton pulse source with a cold cathode. Class 21, n0,.177001
[announced by IM-Btitute of Theoretical and Experimental Ybyqi
(Institut teoreticheskoy i eksperimentallnoy fiziki)].
SOURCE:' Byulleten, izobreteniy i tovarny1ch znakov, no. 24, 1965, 48
TOPIC TAGS: proton. cold cathode, linear accelerator
ABSTRACT: The proton pulse source with a cold cathode, in the form
of a small flat plate with a fixed discharge area, intended for the
use on linear direct-action accelerators,17is characterized by the facti
that the cathode is equipped with a needle, from stainless steel for ~
example,, which is set on the axis of the source. This is done in
order to facilitate the firing, holding, and stabilization of the dis
charge, to prolong the lifetime of the cathode, and to increase the
discharge current at relatively low voltages.
09.20/ SUBM DATE: o90ct64
SUB CODE: 7
Card 1/1

ACC NRiAT6012258 SOME CODE: UH/3138/65/OW/3B0/0DUJV0UIW.
ALITHOR: La itakiy. Yu.-laq AbargAhkcm- V- -q-
Z711
ORGS none
TITLEs Pulsed ion source with a cathode needle.
SOME: USSR. Gosudarstvennyy komitet po ispollzovaniyu atomoy energii. Institut
_0
teoreticheskoy i skoperimentalluoy fiziki. Doklady, no. 380p 1965- Impullanyy
Is-FoiffifF)i-lkat7c~ oy g oy,
TOPIC.TAGS: ion source# cold cathodep eaUmde-zeedle, ion emission, steel/
IKhI8N9T-steel
ABSTRAGTs The article describes a pulsed ion source with a cold cathode and a
cathodo needle for stabilizing the discharge position with respectIo the emission
aperture. The ion emission current is 0.3 amp., the pulse duration is WMicro-
seconds, the pulse repetition rate isO.2 cps. power intake is 35 w, hydrogen.consump,
tion is 25 cm3/hrp proton.concentration is 85% of the density of the beamp and
cathode longevity is over 3000.hr. The cathode was made of IKhl6N9T steel, which is
resistant to ion bombardment in petr6leum-craoking products. The ion source has
been in operation for two yr with an electrostatic generator4njector of the ITEF
proton synchrotron averaging 600-700 br/imonth. The device was opened several times
for maintenance and cleaning; no changes on the cathode surface were observed.

2
-ALCC3 N8RO,5206012250
r
The authozoexpress their gratitude to L. L. Golldin K. K. Onoogyak V. A.
__Iyv and
Batalin, for discussing the results aarve, -A-P --&-to-v) V. Y----Z
YU---. -G
d R. P. Yudintson for participation in producing and studying the ion source.
Orij-.a-rt-.-K~it -5fig=913. LLD3
SUB CODEs 41 SWH DATEt 23AU965/ ORIG RKFI 003
2./2

PII;CHUKD V.; IAPIY., V.
-C--
Blectronic,level indicator. V pom. radioliub.no.n:57--64 f 61-.
(MIRt, 25-.6)
(Electronic apparatus and app3jzmces) (Level indicators)

LAPIY, V A inth
Conta"ns electrANA4 equipment for liquid level cobtrol.
Ugoll Uk--. 5 no.10:37-40 0 161. (MIRA 14:12)
1. Institut avtomatiki Gosplana USSR.
(Coal mines and mintng-Electronic equipment)
(Liquid level indicators)

t? A7,
CS
04 4
Vs e
ILI
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2. .1 X
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S/123/61/000/022/020/02-`
Aoo4/Aioi
AUMORSt Pechuk, V.I., Lap t_ V ~A
TITLEi Electronic level signalln g, device
PERIODICAL: Referativnyy zhurnal. Mashinostroyeniye, no. 22, 1961, 24, abstract
22E173 (V sb. "Avtomatiz. I priborostroyeniye", no. I, Kiev, Goste-
khizdat UkrSSR, 1959, 61 - 64)
TEM The authors describe the principle of action, circuits and design
of the level signaling device whose sensitive element is not in contact with the
medium being measured. The device represents a 2-circuit quartz free self-ex-,
cited oscillator. The anode circuit of the self-excited oscillator consists of
a h-f inductance coil, adapter ca~jacitance and coaxial cable with pick-up which
ia:inductively or capacitativelT,- connected with the anode circuit coil. If the
device Is switched on, an electromagnetic h-f current field originates around
the pickup. If the power linea of the field are crossed by any substance, a
power drop occurs which is equivalent to the change In equivalent circuit resis-
tanae. If the pickup is approached to the medium beir~gmeasured, the resonance
frequency is changed, the phase balance in the grid and anode circuits Is dlstur~-
Card 1/2

S/ 123/61/000/022/020/024
Electronic level signaling device A004/A101
ed, the anode-grid current is abruptly changed, and a relay starts operating
which is connected into the circuit of the servomechanism. The necessar-j senZI-
tivity of the device for materials with different loss magnitudes is ensured
selecting the generator frequency. The sensitive element can be placed in a
jacket of refractory or-insulating material or on the outer wall of the vezTz.(':_
Tests of the device showed that it can be used for controlling the portioning an-J
level measuring of aggressive, explosive and other liquids, as well as solid
powdery and lump materials. The operating temperature is in the range of -60 -o
4,8000C, the sensitivity for liquids amounts to 0.5 mm and for solid bodies
5 mm. There are 6 figures.
A. Pavlovskiy
[Abstracter's note: Complete translation)
Card ;?/2

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UPEA, Frantisek, In%.
P'_llom~l 0-
4
F.undation of the 200
vakia. -Inz. sta7,r~j 12 no.7-.287-29

Lw~M~~trans1a.torl; GOLIDMG, M.L.. redektor; ZUBRILIO, Z.P.,
tekhnicheakiy redaktor; PEVZNRR, V.I., tekhnicheBkiy redaktor
[Probless of labor Rroductivity in U.So agricultural Vaprosy
proisvoditellnosti truda v.Sellskom-khosiaii3tva SUA.'[Sboraik
sostavlen i pereveden IA.B.Iepkesom.] Moskva. Goi3.izd-vo sellkhoz.
lit-ry, 3.957. 324 P.- (MIRA 10:11)
(United States-lebor productivity)
(United Statets-,-Agricu~tuiro--laonomic aspects)

QjPKES, YakOV BCntbjLn~,VjCh; LO;'>TII*", V.P., red.
- -S, -.- -
(Intensification and systems of agriculture] intensifikatsiia
sel'skogo khoziaistva i sistemy zeraledellia. Moakva~ Fl-c-
nomika., 1961, 238 p. (milu 1?: 8)

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T=SMURIC MMOD M M DETERMATIM OF CCIRRDM FORM
Be D. Lu=.w (tovedskaya Laboratarip, 190, vale 14, Apr**
ppe 505-4M). (It lassian)o A method cdr measuring aceralvo
09
- 0 force with the help of an Instrument ror measuring the do-
J
0 0 romtloa of a Iftdod wasbuln Is described, and im oxwVlo
0
Is gj"M to Sbqw the appliwAllity of the method to the mag-
notict testing ~Ustoqlo~-8010

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LAPKIN, B.D. -
-
Electric modeling of dynamic stresses produced in mine boisting
ropee during lifting of loads from bases at rest. Prykl. makh.
2 no.1:29-39 156. (MLRA 10:2)
1. Dnipropetrovelkiy inBtitUt inzheneriv transportu.
(Strains and stresses) (Electromechanical analogies)
(Mine hoisting)

LAPKIN, B.D., kAndidat fiziko-natematicheskikh nauk, dotsent.
- ~- ~- -
el:_.-
Electromechanical models of dynamic forcon in hoisting cables*
Trudy MIT no.25:152-171 '569 (MIRA 10:1)
(Electromechanical analogies) (Gables)
I

F, P,
Dnipropetrovs 'k)
Blectric modeling of etresSeB in cables during removal of the
load from an immobile foundation (with initial lap). [In Ukrainian
with summaries in Russian and 'English]. Prykl.mekh.3 no-3:317-324
'57. (MIRA 10:12)
1. Dnipropetrovslkiy institut inzheneriv transportu.
(BlectromechAniCAI analogies) (Cables)

(6ioll W. SOV/144-58-9-2/18
AUTHORS: 4,~2,kin BaD. , Cart-Idaba of Physico-Mathematical Sciences,
0c Y I -
en ,an omazov, D.B., Docent, Candidate of Tec.,.nical
Sciences,Head of the Chair of Electrical Engineering
TITLE: Influence of the Installation of Station Tracks on the
intensity of Stray Currents (Vliyaniye razvitiya
stantsionnykh putey na velich-inu.bluzhdayushchikh tokov)
PERIODICAL: Izvestiya Vysshikh Uchebnykh Zavedeniy,Elektromek11ar1i1Ca,
1958, Nr 9, pp 6-15 (USSR)
ABSTRACT: Methods of calculation of the stray Currents in uniform
railroad track lines, i.e. sections not containing
stations, are well known. In this paper the authors
deal with calculation of the magnitudes of stray currents
in non-uniform track circuits which include track
networks of-: - stations. For ordinary track sections
with a longitudinal resistance of the rails per kilometre
rP - and a contact resistance per kilometre rn, the
distribution of the volta-e and current in the rails.,
taking into consideraI --ion'adjacent sections, can be
Card 1/7 expressed by the following differential equations:

SaV/144-58-9-2/18
In'fluence of the Installation of Station Tracks on the Intensity
of Stray Currents 1)u r
C) x P
61 U (2)
bx rn
the solutions of which are:
U = Aeax + Be-a_x9 (3)
i = y(Aeax _ Be-ax), (4)
where a =, Y rp/rn~- the leakage characteristic of the
rail cir cul'u, y = -'/J7n , A and B are integration
constants which are determined from the boundary
conditions. For a train moving at a constant speed
v = L/T. we obtain the following relation for the
leakage current in the case of a constant tractive
Card 2/7 ?ffort I = const, at the instant of the train being
in the central section:

SOV/144-58-9-2/18
Influence of the Installation of Station Tracks on the lnt6neity
of Stray Currents
I _ 2
IT I aL (1--e- 2
For rails of the Soviet type R-50, rp = 0.02 Ohm/km and
in the case of the ballast being in a satisfactory
state rn = 2 Ohm/km. In this case for a line section
L = 22 km (between the location of the locomotive and the
point where the current is fed in), Q = O~393 IT, i~e,
the stray currents amo t t Nrer one-third of the
electricity consumption the~ocomotive. Next to be
examined is -'%-.he case of two stbLtions having a length of
line between them. Each station is assumed to occupy a
length Z of line, and the line between the stations has
length L (Fig 2). The labels 1,2,3,4,5 are then applied
as follows. 11111 corresponds to all points to the left of
the first station; 11211 corresponds to all points in 'the
length Z of line occupied by the first stationi 11311
dorresponds to all points in the length L of line between
the stations; "411 corresponds to all points in the length
Card 3/? Z of line occupied by the second station; 5" corresponds

SOV/144-58-9-2/18
Influence of the Installation of Station Tracks on the T-tensity
of Stray Currents
to all points to the right of the second station, With
these labels for suffices the authors then formulate the
logical extension, to each length of track of their
Bqs (3) and (4), ~qs (14) of the text. Numerical
calculations are carried out for the case of a
locomotive moving along a 20 km stretch of a line, at
the two ends of which there are stations with tracks
extending over 1 km each. The presence of the extended
tracks at the stations resulted in an increase in the
stray currents by 13%; in the given case each of the
two stations contained nine tracks. Experimental
investigatiomof the influence of extended station
tracks were carried out on the single track section
Nikopoll-Marganets of the Stalinsk railroad (Ref 1).
In the short circuit experiment the conductor was
connected to the rails at the "neck" of the station
Marganets and the current was fed from the traction
sub-station of Nikopol,. 30% (477 A) of the current
from the short circuit point flowed through the two
Card 4/7 rails, whilst 70% (1123 A) flowed towards the station

SOV/144-58-9-2/18
Influence of the Installation of StaT.-Jon Tracks on the Intensity
of Stray Currents
tracks in a direction opposite to that of the current
supply source, The here obtained calculated results,
which are graphed in Fig 5, confirm these experimental
results. The relations derived by the authors fG--
calculating the influence of track systems and stations
enabled gaining more accurate information on the
reduction of the resistance of the stray current paths
as a result of the shunting effect of the ground. If
the potential difference at the ends of a rail section,
without taking into consideration stations, adjacent
sections and the shunting effect of the ground, is 6 u
and, taking into consideration these factors, it is Z\-U21
the ratio kp = Z~u 2~a ul characterizes the reduction
in the resistance (to ground) of the rail network
resulting from the presence of stations, adjacent
sections and the shunting effect of the ground, For
single track lines (n = 1) the value of this coefficient
Card 5/7 k p can be expressed by means of the equation:

SOV/144-58-9-2/18
Influence of the Installation of Station Tracks on the Intensity
of Stray Currents
kP - I-e-'(L (29)
a(L +.
Card 6/7
In Fig 8 kp values are graphed for single track lines
as well as for station sections containing ?..14 and 25
pairs of tracks. The equations hitherto used for
determining the resistances9 on the basis of which the
short circuit currents are calculated, also have to be
modified taking into consideration the correction
coefficients k., By comparing the respective formulae,
Eqs (30) and (31) it can be seen that introduction of
the correction coefficient leads to an increase in the
minimum values of the short circuit currents', which
is of considerable practical importance.
L. A. Manashkin assisted in calculating the numerical
data.
There are 8 figures and 3 Soviet references.

SOV/144-58-9-2/18
Influence of the Installation of 113tation Track-s on t'he inttemzit~-
of Stray Currents
ASSOCIATION: Kafedra. elektrotekhniki Dnepropetrovskop instituta
inzhenerov zheleznodorozhnogo transporta
(Chair of Electrical Engineering, Dnepropetrovsk
Institute of Railway Transportation Engineers)
SUBMITTED: July 7, 1958
Card 7/7

124-58-9-10337
Translation from: Referativnyy zhurnal, Mekhanika, 1958, Nr 9, p 134 (USSR)
AUTHOR: Lapkin, B. D.
TITLE; Dynamic Loads in a Mine-shaft Hoisting Rope With Due Account
of an Overlap (Dinamicheskiye usiliya v shakhtnom kanate s
uchetorn napuska)
PERIODICAL: Tr. Dnepropetr. in-ta Inzli. zh. -d. transp. , 1958, Nr 26,
pp 199-210
ABSTRACT: Bibliographi-c entry
1. Mines--Equipment 2. Cordage--Stresses
Card 1/1

25(2) PlIA33 I BOOX EXPLOITATION 30V1:2967

Akadadya nauk SSSR. Institut mashinovedonlya. Seminar po teOrU
mashin 3 mokhanizmov
Trudy. too XIX. vrp.74 (Transactions or the Institute of Machine
USSR
f
S
Th
.
eminar on t)W
eory o
Science, Academy of Sciences,
.
Machines and Mechanism*, Vol 19, NO. 74) Moscow, Izd-vo
AN SUR, 1959. 66 p. Errata SUP 1nearted. 2p5OO Copies
printed.
Scientific Supervisor of the Seminar: r. 1. Artobolovskly,
Academician; Ed. or Pub2lehing House: 0. B. Gorshkor; Tech. Id.t
1. F. Kovallskaya; Editorial Board: 1. 1. Artobolevekly,
Academician (Heap. Ed.)j 0. 0. BaranoV, Doctor of Technical
sciences, Professori V. A. Gavrilanko, Doctor of Technical
sciences, Proreasor; v. A. ZinOv'YOT, Doctor of Technical Sciences,

fessor; A. Yo. Kobrinakly, Doctor of Technical Sciences;
-
P
chnical Sciences, Professor;
r. Levitakiy, Doctor of T
;
W. P. Hayevskly, Candidate o Technical Sciences; L. X. Reahetov~
Doctor of Technical Sciencess Professor; and X. A. Skurld1n.
Doctor of Technical Sciences, Professor.
book Is intended for engineers laorseted In the
theory or machines and mechanism*.
COVERAGE-. The book consists Or five scientific* papers dea"m
with mothin a and mechanisms. The topics Aov*red Include
dynamic principles of shockproof Screens, electrical simu-
lation of dynamle'loada acting In mine hoisting equipoomt,
dynamit loads in spur Stereo an analytical method of deelKnIng
cam profiles, and the analysis or forced vibrations In a
sy-stem with a nonlinear restoring force. Pic personalities A"
mentioned. References follow several or the artlales.
TABLI OF comm j
Preface 3
~!UIQVICh V Ya Dynamic Principles of Shockproof Screens 5
Un an analysis of the differential equation
of motion for shockproof Screens used in coal-dronolng'
plants, the author presents a method for designir4g
and internally balancing 'Screening machines.
_
-
jW
1j2jUZ._Vx=b=-El#ctr1c&1 Simulation of Dynamic Joidi
MGe
_
-To-latIng Equipment 14
The author prevents restate or electrical simoistIon of
dynamic loads acting on elements of a singlo-drum hoist
during the initial stage of lifting from both shallow and
deep mine shafts.
j. M. Effoct of Attached Masses an Dyneade IA3&da
AbrSMqy_
,
in Spui (Jearn 25
The author discusses the problem Of dateroxinIng dynesdo
loads an gear teeth caused by errors In m&"ur&ctU".
He investigates the effect of a mass mounted an a gear
ithaft In the form of a disk on such loads. The "suits
BhOw that In a gear train wIth very rigid abort Shafts,
the attached manses increase dynamic loads conxi4erably.
However, with the Increase In gear Man. the effect of
attached mass Is reduced.

L.A.
Blectric vodelln,-, of mine boists witb clearance. Naucb.dokl.
vVe.abkoly; energ. no.1:259-264 '59. WRA 12:5)
1. Dnopropetrovskly institut Inzbenerov transpqrta.
(Hoisting maebinery-Models)

IAPKIN, B.D.
Pleetric analog representation of d7namic stresses in mmilre
Trud7 Inst. mash. Sem. po teor. mash. 18 no.74:14-24, '59.
(111RA 13:2)
(Strains ana stresses-Zlectromechanical analogies)
(Mine hoisting)

S/198/61/1007/005/002/015
D274/D303
AUTHORS: Lapkin, B.D., and Tsukanovv G.A. (Dnipropetrov'sk
TITLE: Dynamic stresses in a visco-elastic fiber on instan-
taneous application of an end load by means of an
Wastic element
PERIODICAL: Prykladnaya mekhanikag v. 7, no. 5, 1961p 483 - 486
TEXT: The problem is considered of determining the longitudinal
dynamic stresses which arise in a homogeneous visco-elastic fiber,
to which an end load is indirectly applied (through a spring). For
such a stress .X) t) = EF (l + Y *1 au(x, t)
S( t/ 19 x
where u is the displacement, the cross section. In addition
os(xg tj a U(X. t) (2)
ax P A2
Card 1/5

29221
Dynamic stresses in a
where P is the mass of unit lengtho The
set up. 1hereupon
s(1, t) + Q11 (1, t) +
where Q is the mass of the loadq and K
Introducing the images S* and u* of the
taineq with zero initial conditions
3/198/61/007/005/002/015
D274/D303
boundary conditions are
-0- 6(l, t) = Qg (7)
K
the rigid,-ity of the spring.
function"B B and up one ob-
p2S a2(1 + Pp) d2 S (8)
= 9
dx
dS 2 *
- = Pp u 9 (9)
dx
2 2
B P) + Qp u (19 P) p S (4 14, Qg (10)
it, P
U* = (OP P) 0. 1 (11)
The function S* which satisfies Eqs- (8) and (~)q and conditions
Card 2/5

s/198/61/007/005/002/015
Dynamic stresses in a ... D274/D303
(10), (11) is expressed by
(xt P) aQg ch Yx (12)
cc (l +6P2) oh Y1 + 11 ah 71
where 6 Q/K; a = P/Q (P being the mass of the fiber). In order
to find the original S(xj t) of S*(x, p) it is necessary to first
solve
a(1 + Sp 2 )ch y1 + y1 sh yl = 0. (13)
An analysis shows that all the solutions of this equation are com-
plex. The solution of such equations is very cumbersome. For con-
veniencep the solution of Eq. (13) is sought in the form
k2e�i2cp - i
Pn = 11 (14)
Thereby, Eq. (13) decomposes into two transcedental equations
with real arguments, viz.
Card 3/5

t9221
S/198/61/007/005/002/015
Dynamic stresses in a ... D274/D303
L
sh2-
x
ag

a 1 6~, + 01

15)
ch2T x+ cos2-
l
a
l
sin 2
alA
Ln
d
0
+
(16
2
h ii
(
) .
c
-X+cos
Y.
%
,
where it (k cos cp; (17)
k y (k + sin (18)
'd tmp n are
(bo given by express hereupon,
ions) the first two
I
solutions (p, and p und for
2) fo a = 0:5 1/ap = 1
T and 8 F2
0,01 are:
p1 1. 068 15-411,

^ (22)
12
P2 ~.293-
-458 12
Card 4/5

2922-1
S/19 61/007/005/002/015
Dynamic stresses in a 1)274%303
These solutions permit finding approximate
the form of rapidly converging Beries)o
the dynamic s3presBes is ascertained aii-A
the table. It is notzd that a knowledge
ap evaluate the rigidity K. There are 1
ferences.
values of S(x, t)q (in
The effect of 6 and ji on
the results are listed in
of 6 onlyp is insufficient
table and 4 Sov*t-bloc re-
ASSOCIATION; Dnipropetrovalkyy Instytut inzheneriv transportu
(DnipropetrWsk 1nstitute of Transportation Engineers)
SUBMITTED: August 25s, 1960
Card 5/5

ACCESSION NR: AP4018288 S/0144/64/000/00110018/0023
AUTHOR: Lapkin, B. D.
TITLE* Constructing approximate solutions for transient processes in lines with
distributed constants
iSOURCE4. 1VUZ. Elektromekhanika, no. 1, 1964, 18-23
TOPIC TAGS: electric transmission line, distributed parameter line, distributed'
iarameter line transients, line transient approximate evaluation, elastoviscous
liar
ABSTRACT: The problem of transients in distributed -parameter electric
transmission lines which simulate elastoviscous bars is theoretically considered.
The bar, each of whose elements'ie subjected both to the internal elastic forces1
and viscous frictiozi and the external viscous friction, can be simulated by an
infinite number of elementary Une sections shown in Fig I (see Enclosure I).
Card

NR: AP4018288
The voltage distribution in the electrical line will simulat6 the distribution of the
longitudinal dynamic forces in the bar. A line consisting of the above sections I
and containing an input k L. section (see Fig 2) will simulate an clastoviscous
I bar with one end ftied and the other carrying a weight applied through a buffer
rpring. Differential equations describing this case are set up, transformed, and
(by the operational-calculus method) brought up to a transcendent equation with
complex roots* As no solution of the latter is seen, the frequency method (weU-
Iknown in the theory of automation) adapted by the author Is used for "constructing
an approximate solution. Orig. art. has: 3 figures and 24 formulas.
ASSOCIATION: none
SUBMITTED: 01Nov6Z DATE ACQ: 23Mar64 ENCL: 0 1
SUB CODE: EE NO REF BOY: 006 OTHER: 000
Card

LAPHIN, B.D., dotsent, kand fizikoqaatam. nauk
Natural frequencies of lines with distributed paramters.
Sbor. trud. DIIT no.A53-59 163. (MIM 18:4)

LAPKIN., G.I.
SEE ILC
DECEASED
PERMAFROST

TAPKIN, I.;POWPINSKIY, M.
On a now roa(L Grazhd.av. 14 no-1:3-5 Ja 157. (MIRA 10:4)
(Airi;lanea-Maintenance and repair)

~-=actsriotioo of the borderlana between the Russian Platform and
Hercynian folding in the Donets Valley and Northern Caucasus. Geol.
sbor. [Lvov] no.5/6:226-227 158. (MIRA 12:10)
I.Vsesoyuznyy nauchiao-iseledovateliskiy institut gazovoy promyshlennosti
Moskva.
(Russian Platform--Geology, Structural)

ACC NRs AT7004524
SOURCE CODE: UR/2563/66/000/268/0078/0088
AUTHOR: Xorobkov, A. V.; Lapkin, D. T.; Sitnikovas L. I&; Khorosbaylov, V. G.
ORG: Leningrad Polytechnical Institute (Leningradskiy politekhnicheskiy institut)
TITLE: Concerning the improved properties of dispersion hardening heat-resistant al-
loys and steels.
SOURCE: Leningrad. Politekhnicheskiy institut, Trudy,,no. 268, 1966. Metallovedeniye
(Metal science), 78-88
TOPIC TAGMS: heat resistant alloy, beat resistant steel, metal beat atment, high
C
-temperature strength, vg=g==eMm
dispersion hardening,~-r~
ABSTRACT: The effects of heat treatment on the mechanical properties of the heat-re-
sistant alloys E!437BU and E1617, as well as the steel E1787, were studied. Samples
of E1437BU and E1787 were cut from billets, and forgings of turbine discs and buckets.
The alloy E1437BU was given two types of heat treatments: (1) air quenching after 8
hrs at 10800C + aging for 16 hrs at 7500C and air cooling, (2) just aging for 16 hrs
at 7500C. Tensile and impact testing were done at room temperature, 500, 600, and
7000C. Creep testing was done at 600, 700, and 7500C* Treatment 02-raised the
strength, ductility, and impact resistance,above that.for #1 by as much as 10%. The
creep resistance of #1 at 6000C and 70 kglmm2 was higher than for #2, but at 700 and
Card 1/2

ACC NR,- AT7004524
ISOOC the creep resistances were similar. Annealed and cold worked (30 and 65% de-
formation) rods of EI617 were also given two heat treatments: (1) air quenching after
2 hra at 111300C + air quenching after 4 hrs at 10500C + aging at 8000C for 16 hrs and
air cooling, (2) just aging at SOOOC for 16 hrs and air cooling. Rom Temperature
tensile data and stress rupture data at 550 and 6000C were given. Again higher
strength. ductility,,.and'creep resistance resulted from #2. Similar conclusions were
obtained for E1787 steel. -Macrostructures of the"three materWs showed that after
01 a nonunifom grain distribution resulted, while 02 gave a fine-grained homogeneous
structure. The dislocation arrangements occurring*after the different heat treat-
meats were discussed. *High4r strengths-resulted because of greater dialoestion densi-
ty. -The plasticity was comelated with dislocation mobility. Orig. art, has; 6 tables
2 figures.
SUB CODE: II/ SUBM DATE: acne/ ORIG REF; 003
Card V2

ACC NRt AT7004525 SOURCE CODE: UR/2563/66/000/268/0089/0096
AUTHOR: Korobkov, A. _V.; Lapkin. D. T.; Sitnikova,.L. I.; Khoroshaylov, V. G.
ORG.- Leningrad Polytechnical Institute (Leningradskiy politekhnicheskiy institut)
TITLE: The effect of holding time at high temperatures on the properties of economi-
cal grades of heat-resistant steel
SOURCE: Leningrad. Politekhnicheskiy institut. Trudy, no. 268, 1966-. Metallovedeniye
(Metal science), 89-96
TOPIC TAGS: austenitic steel, stainless steel, boron steel, heat resistant steel,
heat treatment, =asu, high temperature steels, impact strength, metallographic
examination.,,
ABSTRACT: A study was done on th6 effects of aging E1696 and EI696A austenitic steels,'
up to 5~60 hrs at 600 and 6500C. Also studied were the effects of reheating to 700 and.
7500C after the first aging treatment, and the influence of boron additions. Four
heats of steel were made having the following compositions: 0.06-0.08% C, 0.32-0.85%
Mn,.0.31-0.82% Si, 11.24-11.77% Cr, 18.25-20.1% Ni, 2.66-3.08% Ti, 0.26-0.50% Al, -l_
ni F
-0.015% B, O.OOS-0.012% S, and 0.'016-0.06% P. Rod samples were heated to 1.1700C, held;
for'2 hrs , air cooledo reheated to 7500C for 16 hrst and air cooled. Aging was done byi
heating to 600 or.6509C for 16, 100, 200, and 500 hrs. Some samples were aged again ~

ACC NRS_ AT7004525
at 700 or 7500C for 16 hrs. fensile testing was done at row temperature and at 600,
6s0, and 7000C. Impav, resistance was measured at room temperature and a metallo-
graphic examination of the beat treated samples was made. The aging treatment at 600
and 6500C for 100-500 hrs changed the mechanical properties: the tensile strength in-,
creased by 10-15% and impact strength decreased by 25-50%. A recovery of-properties I
in E1696 and E1696A occurred after reheating to 7500C and holding for 16 hrs. A eu-
tectic. phase developed in E1696 containing 0.015% B which segregated at the grain
boundaries and caused the greatest change in mechanical properties. In the low boron
steels, ~i3M, Al) caused strengthening after Aging at 600 and 6500C. The restora-
tion of mechanical properties by reheating to 700 and 7500C was caused by.resolution
Of the Ni3(Ti,-Al)-pb#se, Prig. art. has: 3 figures, 4 tables.
SEIB ODDE: 'SEMM DATE: none
Card 2/2

I.I.; POVARNITSINA, T.N.
Organosi3icon compounds. Part 1: Compounds containing alkoyypheql
radicals. Zhur.ob.khim. ~2 no-4:1314-1318 Ap 162. (WRA 15-4)
1. Permskiy gosudarstvannyy universitet.
(Silicon organic compounds)

1 11411141 t o A, 411111314tiso list ?I Al a if a it van-all us its air NIP* At 4241 614PIP

'A
ll C at 1-1 LU-11,
a I _09 cc J:P_UiA_A -A _L_ It j a F_
0 s-1--

00
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0o 16ifirestiptift of Val (Perus) crude oiL D. 1W MAUX0 AP90 1. 1. LAmix-
wair.Ptraoll. 14444(in Hittlialt
1
from wellI No. I and No. la Is highly aronuatirrd. cotIts. *1xvut 25% ga"ine. Lip to 5%
" -00
1
O paraffin wax. Its krrtwnir friActimi. which
S, 6% naphalarn". 14% "us am] I h
t rof
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ill
i
f Th
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of vmous tests are tabulated A. A. Boivitrumm
so .00
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1810. at
fm= 10 to Is a-, mid Ac~ we nmotycfit~ oil LU41
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4y
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aw wi*w from Qe =ax. Mt.
actice Itm 'in c(Ahe hydrowbons pro- Cleo
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so VVIVIRM Wo th* mW rodeo" with gn dukt.
710 powbin-W '-"Wwbo3ww-vlj POW to the
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tim al tbt bmtsle Cj w"bykU.2-maltykabl" If "" Wes
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ALLUKKAL LITINATME CLASSWICATICH

ArfIlf"
- 0
Sb;
J,3 'AS C.1 ;&t
u a, AT,=

a of
In,
s v 61 0 0 9 IN a 11 .0 a2 4
01 x of a a It .1 1
0:6 0:0 00 00.0 of 0 41 6~ (A 0 0 0-0 0 a 0 0 00000
be a a

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=Igo L tyl
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earckm or me% -
magnesium IlromWe &IxJ (OhlMi %t(1- 41(fe I" 1"etic cl'
ir"S at flit lifirnnedi3tt-INIAlluct ~'tagr; :1 such I'toducts
w"r ;,olalrd, Pronlome%ityk-nr (Ut c.1 and (1-4 g. WIg
is I I
~ I weir trArfed In litto atki tivaled %ifil IN S, (CO'I"Of Ili
'~' Ftdo; the mill. was bolieIl A fill. anAl 11"4111114t. "ith Ilkt?
117 1 10"' A 11; after wailiving the F40".u. with life,
`a:'M.'CO"'..1"Odr ing, there wa4 obtAlmil 12.11Y g. Fa :'4.4-
trimelk mul"Llf, M. 1,2 3' (frorn peir. r1her), lI,. 102'
(hydrXIsis bY fff'.. uk. NAOII g'lve the
arid. m. 153-4' (from water)). file mother liquor fron,
the Above I;avr 3.2 C. bi~lit .Vt. In. 11)1--2* Omni FtOll).
Furibeydist". OfthCfCAM&)Il
t,, IMT-210'. M. 320AS-21' (fit"Is Htolf) We. SJ; tht
1.2g.
'tjytOjW- M.10-l'(frortiviOlf), Whr" tile react Ion *AS
run with ecissimoby snits. of traztnt-i which weir lui%ed
L in
irvrr" ordrr from the Above. thrte Was obtained 40 Vt
mbivh m3% im-lated
ivy dimn., followed by crystn. frorn pctr. other. The
uvotbPr-liquor hun this was redi,td. (b, 1-'N)-4n*) and
byd"72M b sk. %4011. yieldini; '4.G4riftdkyj-
lp"Wrlynyise m. 116' (fr-m CSO. "hich agqx-ars
he
to ii~ Ille source of the mandelicavid virri". throush I
ion of
reducing action of the Gtisimid i-gvtit. Rvj~iit
a 30 V a III a 41 4
-the above with M(WIllifev), save Milr" ixiI-Pr :.j.6-
friftelky1mandelatt, fn. rul" h,. ISNful" while (COV_
CII&CHMet), gave 40~",. ivo-flu esiff, M. 455' (froin pett.
ether), b. VM~ W. and (CWtu), zm~c 40% IN rstep,
m. CIA' Mom pr1r. ether), N MIT-7V. Acontrole%pt.
AKwed that the Utn(,ityl I-volAtill was twotably formed
firm the mducing actioti of the GriptArd rftMt an di-
Inesityl Iliketour. Ill. Rtscum of
in, asligm broaddit. NIFA,
UWNGN" umm eilm-'
b do, ud olkil f - OW. 7,29 34.-
J46 s.j. 27 It. EtIlt, alld 13 9.
Mt i4eff IVactrd Ill HIM %ohl. (thk '.,'edure avoids
eculing o(flit Sit %itli tllvifi~.Lbvef of and
tile 'Olu, was tmiled %ilh 15 S. IIC(hut and llt%tCl til
Ill--; After thc ts,M41 dcv-11101. with im and W';, AcOll
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Umu petr.~
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could not be isurifird. AW), ll)r%)IYI lsonlide in A 3'jm".o.
reactim savc a "tualt allit. of dimrsily1malklmr, tn, I:L"~
(from lictr. ethcr), wal dinwjityl Jejon'e, m. 13,-8* (fronj
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t1l"teric hindrance 4n grim-&-rd react-fons. ill. -Tiec'ion bf%-.-Iveen T-;en'L,-r!ie~h':-7jbcnzene-
MtBr, durene-I-rgBr, mesitylerze-E:17Br ard ethyl -f orr.-d ate" by '1. 7-1 I.ankin b
SC: Journal of General- GheZiFtr CpEhcl-ei Lhi~di) -.946, Volumme 16, 1--c. !~-5
y (Zhurna

0 We 0 0 0 6 0.
it Ar a to 0 41 a 41 4W *to
-A
OSA so
00i,
00A
.0.0
II rl~b
Sirric Mminaft Dvem Grignard Reactleivs. W. A -00
004 New MOW 1w Obtab"s the. Welt cd the -06
..O~ V. lu ND&2%b= dUGAj-,.d
Reagents.
it
&W ibe BM=bW Attlan of G Ali .00
00,3 Russian.) 1. IJAP-hl-n-and others. Zhurnal ObxA co
99,3 Khirnii (Journal of General Chemistry), v. 009).
July 1947, p. 1332-1350. coo
00 1 Esters of secondary a-oxyacids have previously
been obtained as a result of reaction of oxAlic acid
esters with Mg-halogen aryls. However the side zoo
092 chains of the latter caused steric hindrance in .0*
604 some cases. The limits of applicability of the re-
action were determined avid found to Include all 2 go*
9 Afg-halogen aryls having I or 2 methyl groups, in I
the other position. Zn Part V, the mechanisms of
the above reactions and of the reducing reactions 1000
which sometimes arrom the Grignard, rrac-
lions were investigated. references.
$see
AITALLUKKAL LIMIATM CLASSAPICATIft
Solabo "Av amw oaf
mIL131 a" All
a An A I a 4 0 0 0 -1 ir
V D'" a OF a 99 a a n a, 4 * - =-,
0 o 'S 61; so 04D see* so 0 0:0.0 so 'D 0-
0.0 6 o 9 0 0 0-0 0 0 0 0 a 0 0 0 0 0-41 aore 0 Joe ee 1*0 go 00.0a
0 0 0 ov, 0
1314121 MAM
11-IN
! Pm,,Li-

T g 0 0 41 61 a J2 0
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4 reattlow. VII. LLmtb (MBW, MA g.) and the Gricuard traxent lrfjyn 41.4
S"rh bladtance In Griper
00 of a"UubWq of the tiew mediod of propustim of eMn S. I -UrC*Ilt. after 12 lirs.'beating, gave 4(ra fill I-WP4- 04
*0 6; Of 9"Olidary -hydrazy acift. 1. 1. Lankin and A. V. A sixoWs. b? 205-7% fro* arid, in. W* (from 1110). in
V I.Tubimova 94;xv. C". Chem.) 18. a . them was obtained a fraction. 7 x.. th
Zhur. 06AW40 -07 &
00 701-90M); cf. CA. 42, -MM, 49' , ft.-Tbe prtv~wsly wbich W" Me.CO gave so= ji-1-44PUAW dikft~. M.
d Gricruird mribod PJ t*ter fornixtion can be used 193-4*. The bo-Dis ester gave 407" ild-ba 1-00
dnrritw
with JtMsX having I or 2 alkyh In the ortbo position, u lyrolak to, 1954% free acid in. W'. Adda. of tim-
well as with primary olkylinAloWitin X with Imuliains; =a fragrat from 411.3 8. belfivilf to 344 S. ctittird .0 9
iry and birused,"t Wurts (Coellt)l and litating 42 hn. pine 25% 10 oc1jW#)Cakk, 0
Ii. 110-20'. ths W-40% in. 34-51 (front prit. other?,
10 Wit, =by be call, Ms (5 6.), W6 g. #-BrC.H.Me, and The Celinard Itaxent from 6.6 g. Mg and VIA g. 111h. Zoo
wing added tothe CHCI wax treated with 20 g. (COXA)i in EltO. the ppt.
24.3g.(COiEt)e, witlitbeCorigbardods. t
ester in the cold. then litated 12 hm., gave 4D% Fj 2- whirb persisted lium the :Yo. of the Gritnard 4M.
r gym-N7.9.) . filmrril off',and' t
ndboacadeb, . bb 121-2% ths 14D-l'; hydrolysis by 211 *, probait he a*
5% Sk. KOH gavc tbtfrw crilif, in. W71 (from xylew); Wo. worked up as usual, yielding only addal. amts. of
00'r roe
1. in oddn. them, was also obtained 7 ff. crade (unstated the -- material; total yield, 90%. (C%Et). (0.25
oe"12 amt. Parr) (2-MeCJ1.),C(01f)C0sFJ. ra. 55* (cmde, mol.) and 025 mol. 5-UrMsC.Ifis (from 5-bromotictuitne) roe
ro rave gave 14 g. ty, 110--W', whkb vnits laydrolyzed by &k. X 44 q
b, 140I-2M)"). which on h1drolrois by 5% &3c. KOH I OH
the fres acid, in. 147-8* ( rom sylcDc-petr. ether). Simi- (6 hn.) to sym4erfabitlylahaim, bi 11" 1 ", d!' 0.7933. *W
I., retion with 35.3 S. jC0jEt)j and the i "&- 1.4440 (M/0), and 2 g. of usUndifwd ocid. The Grig. 4:0 0
eat from 63-25 g. 3,4-Br(A Z =ated 14 need reagent Imm 58.3 g. hie.CBrIlh with 43 S. (CCiiEt), i roe
9 IferCH)CMAN, I
hro pive 31)17o Fj 5-mAyi-i-is rT4&x liling 60% (Phme'ch. in. 119'.
ftdals gave after 12 hn.'ba
.1113 froml e
fre, a~~. m, T. Ph). G. M. KDUAAPDff
~vj I.. A I.. I L A StIALL1,10CAL LiTthATURI CLAIS111CATION
ILI
-ti 'j 0 1 W of A) a 3, 9
Ults AV Q fl; P 11 t# Of. 9 K fi IF 9 M Cf tt it No ono
gig 0 o 0 0990606 00 00 0 of* 9 0 0 0 0 00000
.*L*I* 9 * * 0000090 00 & 0 661066666 0 0 iiegoes
:

Steric hindrance in organomagassfum reactions,
VLH. Preparation of a-hydroxy ketwes. 1. 1. 1A M.
and A. 1. Golovkova Zhar. 0!,514M Kkiny.
Chem) 19, 701 43(1949); cf. C.A. 43, Iffia; Fuson and
Robertson. C.A. 37, 140GI.-The synthesis of a-110 kt-
tones from R'.%IKX mad diketones (ads only with low-mol.
unbrariched R3dgX rcagcntx; the majority of the Latter
(a- and o,o-substituted afyls and branched alkyls) give
reversed older of addn. to the diketories satisfactory
irlds of 110 ketones. Thus, Sn X. litromomesitykne and
1. Mg in EtO added, after fraction, to 21.5 If. Art in
HtsO with cooling and stirring, followed by 10 hrs. beating,
gave upon decontims. by 10% AcOlf, followed by washing
with 10% NAOCO.. 2417, MdAy1wei lacrl*ybi .mot, b,
1.03414, xV 1.5165. llaylkvd
113-15'. d!* I ratt"e' m*
174-6* (train FIGH?. Similarly. R?,IgX frout 34.2 C.
*-MeC.)J#Dr gave with '17.12 s. Act 42% imerhyl-o4olyl-
arelykarbox0j, 61.6 105,13 (i d-.6 1.05M. mV 1.5=; phemyl-
Wrare. m. 135-7' tam EtO11). 3-Bromocyrneue
g. suntwi - gave 25-e wA-A_W(J-m&dAy1-G4jo 0
'64eftykarkned, It, 127-W. ds* 11.01M, xV . 5
P4effy rn
wNle 41A S. I -BrC,slir jmv.- 45% mrJhy1-J-maJskJAY14CWJd-
ca,hemol, 1), I.M. A'. crystg. from 11,0 as a monolsydrate,
a which lo,-es )it() in mrsti. l1hMxl1r (31.4 W.) Rave 30%
Its HRA00% d-- IOU), *V
I.M40. It Prepamtic~ of ketones by ;eaction of ell
halides with orgdnomagoesium compounds. 1. 1. JA kin
-anti A.V. Lynl,itnova. Ibid. 707-16.-ThrmninfRa
of the inipiA,ihiltiv of ketone synthesix from RMxX and
RC(W1 i, true only for small R groups; steric hindrance
in either R i% sufficif-rit to yield Abe desited koones. Iii-
ortho-ulAtitui"l derivi.. of the RAfxX type yield only
b ktionct on rvaction %ith RCOCI, while mono-rtho de-
deri". flirimarr with long chadris. or secondary or fer-
6iry derivs..) give ketones with proper techniques: equi-
molar Itiroportion, and reverse order of addri. RMtBr
-from 50 g. I imillomrsit I 1,-1,c a nd 7, C. %fK bra I Mll, fit.. ill
J:f.O with X1, HICI and dnomixf. %ith 14"1- AcOll
mr, b, VA' (on CICITIFTICPWII
yielded:14"; phrnylintititylkeh
reduction virlds benzybricsityline, m. W); 2 mole,
.RN19X failed to change the r"ult. RXlxX from 57 K.
o-MtC.1f,fir in rt,O added with ice-cociling to 401.6 K.
MCI in El'O and treated a4 above gave 511-, ii-wdk ,Y1
benx~ph "r 1 134 -*- M. 1041-5, (Iran)
" - _it]CfxVxivr% the ketone anti %ame
lictr. toolm
-(P-%1cCJl0tC(Ol0l1h.
Iit1O added a~ above to 3.1 %. MCI in FIM and lwatt,l F-
hrs. gave 691" Pk k1h)l ki,1044% 11, 1117-14% tit. 7,,'
(C 1 11 gave I-be4tylitaphik-ilr-Fe. tit.
lemmen,en re, I u
.118"). R.NIKX from 43 g. p4leCtIl.fir %oh fit hr,. heat.
ing gave 40", Ph P-Mlyl ki-Ir"'r. 1), ov Xi 4*
(from MOM. while R%ixX front :11.4 x. Mill gave miti,
28 g. BxCl, after standilig I hr. at room temp- 40r. l1h,CO
and 144`0 PhiCCl (prolmh1v forturd frous PhiColl awl
excess DxC1 during the reaction). 0. H'41-3rkl'. in. I It)'
(from CJIJ. RNfgX from 40 C. loromomesity1cor
treated in FtO with 15.7 g. AcO in FtrO. followed by 10
ties. beating, with stirring 3 brii., gave 10~, Me mejilyl
kdomr, 1), MAW (reduced by the Clentmenen method to
erhylitiesityleme. 1, R%IxX (front 114 X. o.
MeC41fil1r) added in Etto to 42 g. AcCI with cooling and
healed 10 firs. gave .30'~ Me ii-4nlyl kelince. b, M-Q*
Mcnimensen reduction gave 2-ErC.IIJfr, fit, 104-5*).
and 14% (o-.%f4,Cd1.).C:CII*. b,., 12443'. formed from
(lehydratiotiol(o.~IcCjl&)3C(011)Ph. RNIgX(romfi2g.
I-Cieffifir added as atiove to 19.5 g. ArCl with cooling.
followed by 10 Wit.' heating, give Mc'r Ife I-x4PIUAyl ke.
Imse, b, M-4' foximr. ni. l.'M* (from dif. EtOllfl. at
-ell as 2.hr~' tI-C,.11,)gC.-CI[1, It, 160-240% m. 106-7'
(from rtofl-Mcco), G. M. Ka-Ur,off

UN 9sQVML9=imtr,-, Steric Riudorc=ou Apr 4.9
cle
Utoned
S- '8torio Hindoramoom During Or$an=&,pesI= Reaotional
q~ Preparing Notone a -by Esaictizag'Acid Build66'W'ith"
01 ec*omds,!' 1. 1. Lapkiu;' A.:-V.
Mosm-
,va, Lbb of Orgamometanic Cm*oumdm~ Natmral
:i~st' Xo1otov State U imzd,A. M' dw kly
ftUrr~:objjhojL JhjMn Vol =J, ft
614Uw tbit, deapIto prevailing oplaim '~',kalwni-odu
~Obtalnod in thia namer except In: Caa6,Vbbro
the acid,luaides aa~ the.,org
=94POP. =
baie suoU loir-moleoular-weighta that tI.my'.;.Ao.
6.5149;~5

11r.CAUr and 7 x. Mx) in Ht.0 IrrAW with corging with
14.6 S. (CICIfjhO in Et.-O. rrfluied 7 hts., and wcaked up in
the utual way was Isolated 45% (:.4kMeCJhC11j)1O. m.
146-7* (sublimed for purification). Similarly. a 3-hr.
In org&ooULAPVAUM f"CUMS. X.
_PAMU" CoW" e4 reaction betwom cmQDWWWO-PUb1W-
toW *&m and &71magnesium halides. Now Inethod of
ion of sterically hWdered symmeak diarylethane
11 I-Lapkin and 0. M. Laplana (A. M.
Unii., Molotov). ZAUr. ObsAckiKkim. U.
Gen. Cbem,) 21. 109-177(1951); cf. C.A. 41, 121W; 44,
)1059a t"0110-0-substituted ArMxx react with Cl-
CI1'OMC or CICIlOEt 11onnally. the action of di-o-sub-
stituted ArMe.-: al~) yields o-,ut~tftuled benryl chlorides or
diarylethwim. Mum fir (fretu 50 1.
JUCV(.H$L#MAFe, b. 97'. d.00 O.VM, 1jV 1.5M; I-C,11,
MgBr Pvt 6b% I-CiACHaOMe bo IW7* d!& LOM, ttV
in
I.OW, and some unknown hlab-a-boikg' product2. C1.
F
Cffv()Et gave M% I-CACH d!' 1.1001,
mV 1.6076. Adda. of 40 x. CICHOMt in 13140 to 2.4,6-
hfesC4HjMgBr (from 100 2, ~fe"ftllr) with Ice 006bg
and refluxing 7 hrs. pvc 40 It. 2,4,6-Me,CJ1sC11jOM#`, N
93-4' d:' (1.9484, nV 1,5!00. and 9% 1,Z-dimesilyk1h4st
), e4. i17-18- (.1t: b,.# 130-90*) (from lwtr. ether);
Vversing the order of skddn. gives 42170 of the above ether
and 58% ZA6-Afr.CJ1,C11#CI, which was not i"tftl as
such but detected by treatment of the crude distillate (b,
90-107*),Aith Iso-AmON& in iso-AmOll, which tave :.4.6-
Ve G11,C11,0Am-ba. N 127-8*, d.16 0.9115, at? 1.49SO.
i~e EIO,.,Ill-. f R161glir from 40 g. bromomesitylvne de-
cunted front the etcevt Mg and added to 16 g. CICHgO.161e,
followed by addn. of 2 mole-70 CuCt, and 2 9, activated Xfg
(by Et DO. and refluxed 5 brs.. gave 24170 1. Addn. of 10 C.
CICJfjOI-t to RNIgHr (from 40 C. bronuxmitylene) pvc
10 g. lh.s SIR-90'. and about 3 g. 1,
Addn. of the dmnted EtvO soln. (from the escess 11g) In the
prelm. of doory1magwiism browde (from 30.4 C. bromo-
durene 10 C Et Dr and 9 g. Mg) to 23 g. ClCIfOMe in EfgO
and rXxini 6 brs: pve no ncxtnaf ether and chiefly (8 t,)
product, be 120-30'. free of Off or 016fe Fmps. apparentiY
RCiIrCI (1ASX-1ptrawthylbrx~yl ekoridt) being formed

exclusively; if The exem Nig is not removed anti the Cl
ether is added to the RMjX, there forms 2.1 g ~ (107c) I.:-
didurykikaxt, in. 234-5' (from MOW, Addn. of 2.4.4-
NleCsILCIW?-Ie(2D.50in xyIeueto2A6-MeC*HNlgIIr
(from 7 g. Mg and 50 S. RIJr) In EtsO, removal of the MtO,
and refluxing 10 hro. gave 2D% dimesily/methamr, in. 13"%
b, no ribane anal" was detected. XI. Reaction'
of ester$ of formic MCI, with organornspralurn compousids.
1* 1. topkin and A. 1. Golovkova. Ibid. 117-23-The
direction of reacilon of ArMgX with EtO.Cli depends on
the metallic impurities In his which affect only the slow
reactions; CoCl, has a similar effect. 7be reaction of
lit()~Cll with 2,4,6-J%1ftC*HjNIjBr made from relatively
in Mir Om .ties unstated) has been described before
er
. 35, 247DIral similar reaction of OAZ5 mote ester with
M
1.25 mole RNIxX from a better gradt M MS Me 10.5
mixed diwtsv"1jdwrbixd and dimrifty1met4inse. 1W-200
with peir. ether Into The leu ool. 4rarUotal, m, 14"'1
and I S. of the wahaw, in. IXI-4*; stpetition of the
cxpt. with omissloin of strong beating or distn. gave 5 xnd
2~5ge..m . When 2 mole-% C*CIj was added to the RAIgX
a 0v it!
cusual procedure Save only the methane dcriv.,
no carbinol being detected, Reaction of R)6fgX from 42 jr.
3-bromoeymrne with 7.5 S. EtOClI gave about 4 g. di-J.
cynty1methaste. bis 230-50', m. 222', and an unknown ptod. -
uct. b,j 2100-W. a-NfeC.II.NfgBr (0.25 mole) gave 7 g.
di-&4olykarbixol. m. II9-2D* (from petr. ether) and about
-tt1ra("o1yI)dhanr. in. 2&3-4*; it the licating was
5 S. 1. 1,Z.?
rxtrmled 10 bn. the yield of the fatter was. 14 g. If purer
Mg Is used. 42.8 g. js-I6IeC4H.Br 6 5 g. M C and 9.3 S.
tn. -f'-. 1.5 g.
EtO6CII give 10.5 a. di-P-loWcarkmZ Z 0
p,p-bilolyl, m. IM-20% and 3.4 S. Z.1,2.2-k1ra*loJy1-
ethaxe. m. 270-7% it CoCIj is added to the reaction mix..
'he main product Is the eubinot and (MeC4114)TCII, does not
to=. I-C.HrMgHr gave di-1-saplabykarbistol and a
smaller amt. of bis(J-xaphthylmelhyi) ether, and CoCll
failed to affect the rcsults. 0. M. Kosolapolf
/40

LAPKIIN, 1. 1., :ATOSH, 1% 1., 3SLOV, YF. S.
Ketones
Steric hindrances in organomagnesium reactions. Part 13. Preparation of ketones by intr--r-
action-of acyl halides with organomagnesium compounds. Zhur. ob. khim. 22 no. 8, 1952
r7 of Con
List of Russian Accessionsj, Libra gress, November 1952. Unclassified.

LAPKIN, I.I.; LAMINA, O.M.
Steric hindrance in organomagnesium reactions. XIV. Peculiar course of
reaction betweenc~-monoobloro-substituted others and arylaagaesium halides.
Zhuri%Ubshchey Khim. 22, 102-12 152. (MLRA 5:9)
(CA 47'no.18:9293 133)
1. A.M.Gorlkiy State Univ., Molotov.

7 -S ~e in
Sp fe-rk hi~dra'nc-----'gitnoinagnesit3in reactions'
_thesis of esters of Alkoxy-conWninj, secondary a-
- ----- -- -------
hvdron- acids: 1. L'Infikin (A. M. Gor'kif State'Llniv.,
A _1Ch -6 53); cf. C.A.
olotor), Zh-uT'()ftTcif hr.'23, C23- (10
43. Ma; 48, 4-Mj.--~-R)TgX (from 33.8 g. 1,2-DrClOit-
OMe and 4.5 g. _h1g) in E120-MePh %v' as added with cooling
to 21 g. (COtEt)j in Et-O, at" 6 firs. tefluxing and tht
usual aq. imittrimt. ilie mixt. ravu with eil, AcOlf 41% EJ
ba 163-5'. m. 629*: bvdrolyiis with "ja NaOll gave
ale.
the free acid, in. 126-7* (from (fit. MLON). Similatly wag
obtaineci 40% IN IS6-9*, in.-
vave 4NI" El 4-
62*. -R'Ml;X from 4j-, V~;
1), al. 14 . In tile
isultition of tile V~ter'tjle
anit. of Yellow _12119_~1101.
alit] in, 2:tq'. Siqui. fly extu..
with -bot 1410111, in %vhich ilm latt-,r was insul. Shnilatly
was Obtamul 192-4%
C,,llNlgBr pw
in. 76-7'; fricacid, in. 127
.10% L'I 2,54hpirihnxymandelale. L# A-70', (6 1.2241,
AC
n2j" 1.532-1; fr(,-e ucij, In, 117-S' (c[. TA:6, e1 at., C.A. 26,
2-Aiboxy-1-naph1hylglycolic (id. m. 137-8' (fivin
5~

. ... .....
!n~a In airriiiiOMMadam rvAdl*ns_. XVr.!.
lit: kvione synflmsti
C.A. 47i, OM1f.-T
Lid ruil RMgX Is pomiblc even'hi ctrinplux
tv. there re fnibstittirmN Wch Ck% OR gmilps.
20.6 lit Ht:0-I&I A Wkis
~th CM11111, wiih 37"Is S, TUCI 1111d the ITIlict. it?-
~t,; hydmly,%ji with 10% NasCOA (licati-68 (1-A
34% A kdanc, bs ZM-S?
2'240-2)", ni. 125~41* (frran por. cther). ItAigile
~r, 2.l-EtOC,pII#llr mid 3.8 g. MCI-Viva 7011d.-
v;p-l-v4philtyl Arraim. b. 211-12', m. M-Ml
3P.5 g., 4,1~McOCnH,Ur And _"JA r. lJzCI
7'PIA "s4vxY.1-tioPkayl kdone. h4 21.1-15", in.,
N 245-77, m', 71-2*. Slmilatiy ria equi-
tn4t. of lttftbr atid IM-BrCjl.CO(3 gave. the follow-
M-6ramophmyt kdmi julkoxy,
bg. and m44~Ahown I-MeO, 48, tis 250-41':-
,,,,n 7-
W, ho, dozoititin. on D $'; 4-meo
129% 4_Fj U&-6k..
.50111POO
7y-
j
;4 P,
W~

LAPKINj I. I., PUCHUN, N. M. and LYKOV, PA'0 A.
Steric Hindrance ln,Organo-Magnesium Reactions. XVII. Preparation of
Ketones by Interaction of Acid Halides with Organic Magnesium Compounds,
page 823, Sbornik statey po obshchey khimii (Collection of Papers on
General Chemistry)s Vol II, Moscow-Leningrad, 1953, cages 1680-1686.
Laboratory of Organic Chemistry,fdolotov State U imeni A. M. Gor1kiy

Rumania /themical Technology. Chemical Products 1-27
and Their Application
Wood chemistry products. Cellulose and
its manufacture. Paper.
Abs Jour.* Referat Zhur - Khimiya,, No 9, 1957., 32697
Author Lapkin I.I., Ushakov L.I.
Title
Rapid Method for Determination of Resin in
Cellulose
Orig Pub: Ind. lemn. celul. si hirt., 1954, No 9, 349-
350
Abstract: A translation. See RZhKhim, 1955, 22622.
Card 1/1

All

' joi~jj(
4
.
eims iA Im,
tyy stcams 'A ht
-:7be paloli- td, 21._in- ox M. se % VM re-flund
;'959,
V. romoulam ruo, the solvoit idlereak.

rue fifoleol mitb DAN NaMin the
i. fijt=?c Arw "'asbIn
PmUltl.. - Thc

:atnxe
tve~"tt oil A PCM
I in a P131P I" (is - bxooDtx IM is)/OAR Mi.
given by
tit

Of the PUIP SAUIOL- 7be o7; %
Fullite _
i
b
h
pt
y t
e stid-no. ~watho&
p
% I 6td. by bi'miculon sind *SZ)71,ig
-
the re
odue aft
f
h
!
-
er evApn. o
t
; W,,Izr *u I.W.
- 111
i
U
obn t.At kftw

Er

4,L$-1 'q
b, IXT-4'.
for xy~Ohesi
A.. I M111

I-N J
L&KIII,I.I.; JAPKINAjO.M.
Reaction of metal halide alcoholates. Part 3. Control of
nesium organic reactions. Zhur.ob.khim.25 no-5:947-950 my 55.
(MIRA 8:10)
1. oskovskiy GoBudaretvannyy universitet
(Magnesium organic compounds)

RI alcoltolates of prhmtry =4 cec=d*xy
TTUV,-),c7 C.A. 50, &,Wb.--To a suspensicro uf powd-
ZmCh under EEtkO was added an cquhzoiar amt. of RtMgBr
and after reflming I hi. the resulting asoln. of WAiCl was
treated with a desired carbinol, refluxed 0.5 hr., treated with
desired csLcr, heated ~~s ree-Aed 3-12 hrit. and treated with
-?sultb! Phr.
A~Dli. Thtic wexr obtahied the follimmag i
NE"r1c) and Jfcc)'Bt S.~r I '~O~ PhICHOCIlph'. m
110': tlitojc," gave IW% of the same ether, but (Utor
Mi,), gai-L- lfj&% initial carbii". CH,(CChRt)j rave 70%
or.ig;nal carbinol ~nd 30% dibeuzhydr-,yl ethc~; RtOBz
gave 100% eUbmxbvdr-vI ether: Ez.SO. eave 30% above

79-2-25/64
AUTHORSt Lapkin, 1. 1. , Lapkina, 0. M. , Rybakova, U. N.
TITLEs Reactions of Metal Halide Alcoholates (Reaktsii galoidmetallalko-
Colyatov) V. Mechanism of the Interaction of Magnesium Halide
Carbinolates With Esters (V. idekhanizm vzaimodeystviya galoidmag-
niykarbinolyatov so slozhnymi efirami)
PERIODICAL3 Zhurnal Obsbehey Khimii, 1958, Vol. 28, Nr 2, PP- 391 - 398 (USSR)
ABSTRACTs The authors began the present work with the aim of determining the
number of orthosubstitumto in which hydrocarbons of the type of
diarylmetbane form instead of haloidides. The'investigations car-
ried out with magnesium halide diarylearbinolates with a gradual
increase in the number of orthooubstitumts showed that in case of
a number of substituents smaller than four thia reaction leads to
the formation of diarylmethylhaloidides. It is assumed that the
formation of diarylmethanes will take place in three secondary and
tertiary radicals which are, however, more complicated than methyl.
The problem was, however, not yet solved by the authors. Oxalic
acid asters react with magnesium halide diaryloarbinolates analo-
gous to formic acid esters. A deviation is only observed. in the
case of mamesium halide diaryloarbinolate with 4 occupied ortho-
-positions, as the carbinol is regenerated in the separation of
Card 113 the products of their interaction with diethyloxalate, water and

79-2-25/64
Reactions of Metal Halide Alcoholates. V. Mechanism of the Interaction of M-,7-
nesium Halide Carbinolates With Esters
acid. In con,-ection with the results of the present and earlier
works the problem concerning the mechani sm of the reacti on of ma-,~;-
nesium halide carbinolates with esters (references 1-3~) rises. Its
solution might contribute toward anticirating ner, cf trans-
formation of ria.-nesium halide ca-rbinolat--s as .7cll Ls to-,-:ard ex-
Planation of tile nature of numerous L;nomalies uhich are observed
in or,ranic i:ia-nesium reactions. The occurrence of anoinalics is the
0 f-1
consequence of a Zide reaction between the initially formed mag-
nesium halide alcoholates and esters. The authors found the condi-
tiona for the elimination of haloidides by means of interaction of
mag-nesium halide diaryloarbinolates with esters. In this connection
the yield of t"le haloidides is as well depcn6ent on the nature of
diarylearbinoles as on the nature of the esters. Numerotis tests
for the investi-ation of the reaction of the magnesium halide phe-
tj
nolates and magnesium halide naphthalates with esters showed that
the phenola tes and naphthalates, in contrast to the alcoholates,
have no interaction with esters. Suiamary3 1) The authors uucge3ted
the investigation of the reaction of magnesium halide diar,-vlcarbi-
nolates vrith esters. It was found that only the ma-nesium halide
Card 2/3 diary1carbinolates with formic acid esters form diarylnethanes in

79-2-25/64
Reactions of Metal Halide Alcoholates. V. Mechanism of the Interaction c[ IL-a-
nesium Halide Carbinolates With Esters
which all four ortho-positions are occupied. In the case of a small-
er substitution these reactions lead to the formation of diaryl-
methylhaloidides. 2) It w"-s shown in new examples that in the inter-
action with eaters of malonic acid magnesium halide diarylcarbino-
lates are converted to diarylmethylethers. 3) It was found that
ma&nesium bromide phenolates and mu,-nesium bromide naphthalates do
not react with esters of formic, oxalic, sulfuric and 3uccinic acid
in the case of equal molecular quantities under a23umed reaction
conditions, 4) The meclianism of the interaction of maGnesium. halide
alcoholates and esters was investigated. There are 1 table, and
11 references, 7 of which are Slavic.
ASSOCIATION% State University, Perff(Permskiy gosudarstvennyy universitet)
SUBMITTED: January 0, 1957
AVAILABLE: Library of Con,-ress
Card 3/3

AUTHORS: Belono-Vich, Mr. I~
TITLE: Reactions of Metal Halide klooholates.
(Reaktaii galoid_metalialkogolyatov)
VI. New Method for the Synthesis of Monoxytriarylr-ethane
(VI. Nov-yy sposob sintezamonooksitriarilmetanov)
PERIODICAL: Zhurnal Obshchey Khimii, 19589 Vol- 28, Nr 3v pp. 605-608
(USSR)
ABSTRACT: Based on earlier investigations of their own (Ref 1) in
which they found that the equimolecular effect of the esters
of formic acid and oxalic aoid on magnesium halide diarylear-
binolates leads to the formation of diarylmethyl halides,
the authors began to eldborate the synthesis of mono-
xytriarylmethan.e. The method consists of a conversion of
a mixture of diaryl-carbinol and phenol(or naphthoj-) with
tne addition of a corresponding amount of bxomoethylmagnesium
to a mixture of boromagnesium-diarylearbinolates and
phenolates. When then oxalic acid ester is added to the
reaction mixture the bromomagnesium-diaryloarbinolate
Card 1/3 converts to di-arylmethylbromidep which again forms a mono-

Reactions of Metal Halide Alcoholates 79-28 3-8/61,
VI. New Method for the Synthesis of ldonDxytriarylmetbsn~-
xytriarylmethane with the un~.,hanged bromomagnesium phentlate
(or -naphtholate),. (see the reaction process mentioned).
The fact that in this no products of a carbinol--or pheno).
grouping, which according to Shorygin are characteristic
for the ether groupy were observed proves that the inter-,
mediate products of the reaction are not ethers. Contrary
to the results of the investigations (Refs 3P4) according to
which o-oxytriphenylmethane is formed in the reaction of
dipheny1methylbromide with sodium phenolate -o somers of
oxytriarylmethane are formed in the present reaction of
bromomagnesiumphenolate, as well as of bromomagnesium-o-
cresolate, with dipheny'tbromide (obtained, as mentioned
above~ in the reaction process from bromomagnesium-
benzohydrolate and oxalic acid eater); these isomers are
those of r~ -oxytriphenylmethane. The ortho-isomers are
onlyformed when tha)T-position is occupied, which is,
for instance, the case whenW-cresol is added to the reaction.
Thus twc compounds which have not been described earlie.- are
synthetized: diphenyl-(2-oxynaphthyl.-2)-methane and diphenyl-
Card 2/3 (2-et.',-~-bynaphthyl-!)-carbinol~

Reactions of Metal Halide Alcoholates 79-28-3-6/61
V1. New Method for the Synthesis of Monoxytriarylmethane
There are 10 references, 1 of which is Soviet
ASSOCIATION: Permskiy gosudarstvennyy universitet
(Perm State University)
SUBMITTED: March 7p 1957
Card 3/3

AUTHORS: Lapkin, 1. 1., Vlasova, V. Ya.
79-28-4-24/60
TITLE: Steric Hindrances in Organomagnesium Reactions (Frostranst-
venny,ye prepyatstviya pri magniyorganicheskikh reaktsiyakh).
XVIII. The Synthesis of Complex Esters ofoC-(P-Alkoxynaphthyl-
-1)-Lactic Acids (XVIII. Sintez slozhnykh efirovoCrtfl-lkoksi-
naftil-1)-molochnykh kislot)
PERIODICAL: Zhurnal Obshchey Khimii, 1958, Vol. 28, Nr 4, PP. 955-957
(USSR)
ABSTRACT: The earlier described method (Ref. 3) was employed by the
authors in the present work for the synthesis of such inter-
esting and important substances, as complex esters
of the oC- 0-alkoxynaphthyl-1) lactic acid. As is known, the
naphtalene nucleus possesses a number of peculiarities
differentiating it form the benzene ring. Of these
peculiarities, above all the increased reactivity of the
carbon atom in theou-position is worth mentioning. Here, the
second nucleus contained in naphthalene is stereochemically
almost equivalent to an orthosubstituent, which is bound to
the benzene nucleus and which causes steric braking. When
Card 1/3 alkoxy groups occupy theg-position in the naphthalene ring

Steric Hindrances in Organomagnesium Reactions, XVIII. The 79-28-4-24/6o
Synthesis of Complex Esters ofOC-(A-Alkoxynaphthyl-l)-Lactic Acids
a system is formed, which also is almost equivalent to the
benzene nucleus with two ortho substituenta. For this reason
organomagnesium. compounds obtained from x--bromo-#-methoxy-
and a-bromo-r~~ethoxynaphthalene, react in the same way with
the eaters of pyroacemic acid as the di-ortho-substituted
arylmagneBium halides, that is to say, only with the ketones,
but not with the complex ester Group. In this process they
form complex esters of theoL-q3-methoxynaphthyl-1)- as well
as of the C/_- (9- ethoxynaphthyl-1) lactic acids with a common
formula;
CH OR COOR
.3
The activity of the c~-carbon-atom of the naphthalene nucleus
becomes manifest in a relatively high yield of reaction
Card 2/3 products. The experimental resultsare given in a table. It

~teric Hindrances in Organomagnesium Reactions. XVIII. The 79-28-4-24/60
Synthesis'of Complex Esters ofe