Zobrazeno 1 - 10
of 913
pro vyhledávání: '"I. L. Knunyants"'
Publikováno v:
ChemInform. 23
A preparative method was developed for the synthesis of 5-fluoro-substituted pyrazoles by the reaction of fluoroolefins with substituted hydrazines in the presence of triethylamine. The fluorine atom at the C5 position of the pyrazoles obtained is re
Publikováno v:
ChemInform. 23
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 40:1705-1708
The reactions of perfluoro-1-hexene and perfluoro-1-butene with phenylhydrazine givs phenylhydrazones of acid fluoride derivatives of the corresponding polyfluorocarboxylic acids. The dehydrofluorination of these products using triethylamine gives co
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:2338-2344
A preparative method was developed for the synthesis of 5-fluoro-substituted pyrazoles by the reaction of fluoroolefins with substituted hydrazines in the presence of triethylamine. The fluorine atom at the C5 position of the pyrazoles obtained is re
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 25:388-391
1. Some N-diethylenimidophosphoryl derivatives of p-aminophenyl-α-alanine and p-aminophenyl-β-alanine were synthesized. 2. Some dipeptides were obtained, in which N-(diethylenimidophosphoryl)-p-aminophenylalanine is either the N- or C-terminal amin
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 28:42-49
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 32:556-560
Amides of β-mercapto- or β-(acetylthio)alkanoic acids were obtained by the reaction of β-thiolactones or β-(acetylthio)alkanoic acid chlorides with amines.
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 26:1027-1031
1. α-Hydrohexafluoroisobutyrand de is an NH acid, and under the conditions of basic solvolysis displays the properties of a CH acid as a result of transfer of the reaction center. 2. N,N-Diethyl-α-hydrohexafluoroisobutyramide does not possess acidi
Publikováno v:
Russian Chemical Reviews. 56:288-298
The methods of synthesis of various condensation monomers containing the hexafluoroisopropylidene groups and the polyheteroarylenes based on them are examined. The influence of the hexafluoroisopropylidene groups incorporated in the main chains of th
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 31:1409-1413
A CsF-catalyzed condensation of octafluoroisobutylene with tetrafluoroethylene leads to perfluoro-2,6,6-trimethyl-2-heptene as a result of a combined addition of perfluoro-tert-butyl anion and octafluoroisobutylene to the multiple bond of tetrafluoro