Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where R. Kh. Freidlina is active.

Publication


Featured researches published by R. Kh. Freidlina.


Tetrahedron | 1961

The rearrangement of polyhaloalkyl radicals in solution with 1,2-chlorine atom migration

A. N. Nesmeyanov; R. Kh. Freidlina; V. N. Kost; M. Ya. Khorlina

Abstract Radicals XCCl 2 CYCH 2 Z (l; Xue5fbCl,H,F,CH 3 ; Yue5fbH,CH 3 ,Cl,Br; Zue5fbBr,Cl,CCl 3 ,SR) were generated by homolytic addition of addition of various addenda to unsaturated compounds XCCl 2 CYue5fbCH 2 . Radicals (I) were shown to rearrange in solution into radicals XCClue5f8CYClue5f8CH 2 Z (II), the latter being more stable than the former. It was found that compounds XCCl 2 CBrue5fbCH 2 with Xue5fbCl,CH 3 ,F could isomerize under the action of initiators of radical processes to compounds XCClue5fbCClCH 2 Br. This isomerization was proved to be of a radical chain character and involves the 1,2-chlorine migration in the intermediate radical XCCl 2 CBrCH 2 Br (III). The dependence between the structure of starting radicals and their ability to undergo rearrangement in solution has been established and the effect of the nature of addendum on the reaction course investigated. The polyhaloalkyl radicals were arranged in a sequence according to their relative stability.


Russian Chemical Bulletin | 1957

The telomerization reaction and the chemical transformations of telomers

R. Kh. Freidlina

1. n nThe investigation revealed the great potentialities of telomerization in organic reactions. n n n n n2. n nTaking the telomerization of olefins with silanes as an example. the applicability of the telomerization reaction to the synthesis of heteroorganic compounds is demonstrated. n n n n n3. n nInvestigation of hetero- and homolytic reaction of α,α,α,ω-tetrachloroalkanes led to new routes for synthesis of diverse bi- and polyfunctional compounds. n n n n n4. n nHomolytic isomerization (not of the allylic type) was observed for the first time in the polyhalopropylene series.


Russian Chemical Bulletin | 1956

Preparation of hexaalkoxydititanoxanes (RO)3Ti-O-Ti(OR)3

A. N. Nesmeyanov; O.V. Nogina; R. Kh. Freidlina

1. n nHexaethoxydititanoxane was prepared by the oxidation of triethoxytitanium. n n n n n2. n nHexapropoxy- and hexabutoxy-dititanoxides were prepared by the transesterification of hexapthoxydititanoxane.


Russian Chemical Bulletin | 1962

Synthesis of unsymmetrical sulfides containing functional groups

R. G. Petrova; R. Kh. Freidlina

1. n nIron pentacarbonyl and colloidal iron catalyze the addition of thiols to acrylic compounds with formation of products of structure RSCH2CH2R′, in which R=C4H9; C2H5OCO(CH2)4; R′=CN; CO2CH3. n n n n n2. n nDisulfides react with olefins at 170–200° in accordance with the scheme: n n


Russian Chemical Bulletin | 1961

Telomerization of ethylene and carbon tetrachloride or chloroform in the presence of the hexacarbonyls of chromium, molybdenum, and tungsten

R. Kh. Freidlina; A. B. Belyavskii


Russian Chemical Bulletin | 1961

Synthesis and properties ofΒ-haloallyl compounds of mercury

R. Kh. Freidlina; F. K. Velichko

RS - SR + CH_2 = CHR - left| {begin{array}{*{20}c} { to RSCH_2 CH_2 R,} { to RSCH_2 CH (R)SR,} end{array} } right.


Russian Chemical Bulletin | 1961

A new method of obtaining tetraacyloxy derivatives of zirconium

É. M. Brainina; R. Kh. Freidlina; A. N. Nesmeyanov


Russian Chemical Bulletin | 1961

Disproportionation reactions of organic compounds containing zirconium, titanium, and iron

É. M. Brainina; R. Kh. Freidlina

n nin which R=C2H5; C2H5OCO(CH2)4; R′=H; C8H17. n n n n n3. n nThe telomerization of methyl acrylate with ethyl 5-mercaptovalerate was carried out in presence of benzoyl peroxide. The telomers C2H5OCO(CH2)4S(CH2CHCO2CH3)nH (n=1, 2, and 3), were isolated. Under the same conditions, reaction with acrylonitrile gave only addition products.


Russian Chemical Bulletin | 1960

Addition of hydrogen bromide to 3,3-dichloropropene in presence of benzoyl peroxide

R. Kh. Freidlina; M. Ya. Khorlina; A. N. Nesmeyanov

The reaction of telomerization of ethylene with carbon tetrachloride or chloroform is initiated by hexacarbonyls of chromium, molybdenum, and tungsten at 115–120‡, forming α,α,α,Ω-tetrachloroalkanes and α,α,α-trichloroalkanes. respectively.


Russian Chemical Bulletin | 1960

New method for the preparation of alkoxy zirconium compounds

É. M. Brainina; R. Kh. Freidlina; A. N. Nesmeyanov

1. n nΒ-Haloallyl derivatives of mercury with the general structure CX2=CYCH2HgZ, where X=H or Cl, or Br, and Z is a halogen atom or anα-C10H7 radical were synthesized. n n n n n2. n nThe thermal stability of the compounds synthesized increased with the number of halogen atoms in the molecule.

Collaboration


Dive into the R. Kh. Freidlina's collaboration.

Top Co-Authors

Avatar

A. B. Terent'ev

A. N. Nesmeyanov Institute of Organoelement Compounds

View shared research outputs
Top Co-Authors

Avatar

M. Kh. Minacheva

A. N. Nesmeyanov Institute of Organoelement Compounds

View shared research outputs
Top Co-Authors

Avatar

S. P. Gubin

Russian Academy of Sciences

View shared research outputs
Researchain Logo
Decentralizing Knowledge