Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Alexander M. Pinchuk"'
Autor:
Aleksandr N. Kostyuk, A. A. Yurchenko, Evgenij V. Zarudnitskii, Alexander M. Pinchuk, A. P. Marchenko, Anastasiia N. Huryeva, Georgyi Koidan
Publikováno v:
Heteroatom Chemistry. 21:103-118
4-Selenophosphoryl-1,2-disubstituted imidazoles have been obtained by thermal decomposition of methyl 5-(diamidoselenophosphoryl)imidazolium chlorides. The position of selenophosphoryl group in the imidazole ring was proved by 1H, 13C NMR spectroscop
Autor:
Andrei A. Tolmachev, Alexander M. Pinchuk, R. V. Smalii, Anatoliy Marchenko, Y. N. Koidan, Aleksandra A. Chaikovskaya
Publikováno v:
Heteroatom Chemistry. 19:667-670
Isothiocyanatophosphonium salts bearing an aroxy group at the phosphorus atom have been obtained for the first time. As found, these compounds undergo an intramolecular heterocyclization to give hitherto unknown benzoxazaphosphininethiones or cyanoim
Publikováno v:
Current Organic Chemistry. 12:25-38
Autor:
Alexander M. Pinchuk, Volodymyr V. Pyrozhenko, Mykhaylo V. Vovk, and Andriy V. Bol'but, Alexander N. Chernega, Volodymyr A. Sukach
Publikováno v:
Heteroatom Chemistry. 16:426-436
Functionalized 2,3-dihydro-1,3-thiazin-4(1H)-one derivatives have been synthesized by cyclocondensation of 3-alkyl(aryl)amino-2-cyano-3-mercaptoacrylamides with aldehydes and ketones under acidic catalysis. 6-Alkyl(aryl)amino-5-cyano-2,3-dihy- dro-1,
Autor:
V. V. Pirozhenko, M. V. Vovk, Judith A. K. Howard, Volodymyr A. Sukach, Alexander N. Chernega, Alexander M. Pinchuk
Publikováno v:
Russian Journal of Organic Chemistry. 40:1638-1643
1-Chloroalkyl isocyanates react with imidazole, 4(5)-phenylimidazole, and 4,5-dimethyl(phenyl)-imidazoles to give 5-aryl-5-trifluoromethyl-5,6-dihydro-7H-imidazo[1,5-a]imidazole-7-ones, and with benzimidazole affording 1-aryl-1-trifluoromethyl-1,2-di
Publikováno v:
Monatshefte f�r Chemie - Chemical Monthly. 136:211-215
The reactions of cyclic nitroenamines with isocyanates were investigated. It was found that two different products could be obtained: in inert media β-carbamoyl products were observed and when a strong base was used 1,6-polymethylene-6-nitromethyl-1
Autor:
Alexander M. Pinchuk, Dmitriy A. Sibgatulin, Dmitriy M. Volochnyuk, Alexander N. Kostyuk, Andrei A. Tolmachev, Alexander N. Chernega
Publikováno v:
Tetrahedron. 60:2361-2371
The reaction of β-trifluoroacetylvinyl ethers with ‘push–pull’ enamines having a methyl group at the α-position was investigated. As a result, a set of CF3-containing dialkyl anilines and their covalent hydrates were obtained. A possible reac
Publikováno v:
Synthetic Communications. 33:4241-4252
New N-substituted 7-amino-1-nitro-2-heptanone derivatives have been obtained starting from readily accessible 2-(nitromethylidene)hexahydro-1H-azepine. These compounds have been further used as starting materials for the synthesis of some heterocycle
Autor:
Alexei Pushechnikov, Alexander N. Chernega, Dmitriy M. Volochnyuk, Anatoliy Marchenko, Dmitriy G. Krotko, Georgiy N. Koydan, Alexander M. Pinchuk, Andrei A. Tolmachev
Publikováno v:
Synthesis. 2003:0906-0914
I-Aryl-5-arylcarboxamidopyrazoles react with phosphorus(III) halides giving the new heterocyclic system: pyrazolo[4,3-c][1,5,2]oxazaphosphinine. Treatment of pyrazolo[4,3-c][1,5,2]oxazaphosphinines with nucleophilic or electrophilic reagents leads to
Publikováno v:
Heteroatom Chemistry. 13:223-228
Phosphorylation of N-arylpyrroles with phosphorus tribromide proceeds regioselectively at the position 2 of the heterocyclic system. A 2-to-3 migration of the dibromophosphino group has been discovered, with its ease depending on the electronic natur