Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Igor I. Pervak"'
Autor:
Heorgiy N. Koidan, Anastasiia N. Hurieva, Svitlana V. Shishkina, Igor I. Pervak, Oleg V. Shishkin, Anatoliy Marchenko, Aleksandr N. Kostyuk
Publikováno v:
European Journal of Organic Chemistry. 2012:4018-4033
Three original approaches to the synthesis of N-alkyl-N′-phosphanylbenzimidazolium salts, which are precursors of the corresponding carbenes, were developed. New stable N-alkyl-N′-phosphanylbenzimidazol-2-ylidenes were prepared in good yields. X-
Autor:
Anatolij S. Merkulov, Andrej A. Tolmachev, Aleksandr A. Yurchenko, Evgenij V. Zarudnitskii, Igor I. Pervak
Publikováno v:
Tetrahedron. 64:10431-10442
The reactivity of 2-aryl-5-trimethylsilyl-1,3,4-oxadiazoles toward different types of electrophiles was investigated. These silanes readily react with chlorine, bromine, aliphatic acyl chlorides, 2-nitrobenzenesulfenyl chloride, and some reactive iso
Autor:
Aleksandr A. Yurchenko, Dmitriy M. Panov, Dmitriy M. Volochnyuk, Igor I. Pervak, Alexander Shivanyuk, Pavel V. Khodakovskiy, Andrey A. Tolmachev, Oleg V. Shishkin, Evgenij V. Zarudnitskii
Publikováno v:
Synthesis. 2008:948-956
A facile method of trifluoroacylation of imidazoles, 1,3-thiazoles, and 1,3-oxazoles with trifluoroacetic anhydride resulted in a set of heterocyclic trifluoromethyl-containing ketones. Unlike common ketones, these compounds form stable hydrates and
Autor:
Aleksandr N. Kostyuk, Igor I. Pervak, Anatolii P. Marchenko, Andrei A. Tolmachev, Heorgii N. Koidan, Anastasiia N. Huryeva, Evgeniy V. Zarudnitskii
Publikováno v:
Tetrahedron Letters. 53:494-496
A direct method for the synthesis of N -phosphanyl-heterocyclic carbenes is described. The method is based on the reaction of lithium imidazolides and benzimidazolides having a bulky alkyl group at the nitrogen atom with di( tert -butyl)chlorophosphi
Autor:
Andrej A. Tolmachev, Igor I. Pervak, Aleksandr A. Yurchenko, Evgenij V. Zarudnitskii, Anatolij S. Merkulov
Publikováno v:
ChemInform. 40
The reactivity of 2-aryl-5-trimethylsilyl-1,3,4-oxadiazoles toward different types of electrophiles was investigated. These silanes readily react with chlorine, bromine, aliphatic acyl chlorides, 2-nitrobenzenesulfenyl chloride, and some reactive iso
Autor:
Oleg V. Shishkin, Evgenij V. Zarudnitskii, Dmitriy M. Volochnyuk, A. A. Yurchenko, Igor I. Pervak, Pavel V. Khodakovskiy, Andrey A. Tolmachev, Dmitriy M. Panov, Alexander N. Shivanyuk
Publikováno v:
ChemInform. 39
Autor:
Andrej A. Tolmachev, Aleksandr A. Yurchenko, Anatolij S. Merkulov, Evgenij V. Zarudnitskii, Igor I. Pervak, Aleksandr M. Pinchuk
Publikováno v:
ChemInform. 37
Direct silylation of 1,3-azoles with bromotrimethylsilane in the presence of triethylamine was investigated. 5-Phenyloxazole, benzoxazole, 1-methyl-1,2,4-triazole, 2-aryl-1,3,4-oxa- and thiadiazoles were found to give the corresponding 2- or 5-trimet
Autor:
Alexander M. Pinchuk, Gennady V. Oshovsky, Alexander N. Chernega, Andrey A. Tolmachev, Igor I. Pervak
Publikováno v:
Mendeleev Communications. 9:38-39
The heterocyclization of N,N'-diarylformamidines with phosphorus trichloride to form 1,4,2,5-diazadiphosphorinanes was found to proceed via the key stage of aliphatic electrophilic ylide substitution at the formamidine carbon atom.