Výsledky vyhledávání - "Z. K. Dem'yanets"

Synthesis of ureas, amidines, and guanidines of the pyhimido[1,2-a]benzimidazole series

Autor: M. F. Gordeev, M. N. Bochkareva, Z. K. Dem'yanets, V. A. Dorokhov

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 40:2479-2482

The reaction of derivatives of 2-aminopyrimido[1,2-a]benzimidazole (APB) with isocyanates or dimethylacetamide dimethylacetals yielded ureas and amidines of the title series. The corresponding guanidines were synthesized by reaction of borylated APB

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4daad8edc3d55d6d1609e20eb3915674
https://doi.org/10.1007/bf00959727

Zobrazit plný text záznamu

Synthesis of derivatives of the new heterocyclic system pyrimido[4?,5?:4,5]pyrimido[1,2-a]benzimidazole

Autor: L. G. Vorontsova, M. F. Gordeev, V. I. Andrianov, M. G. Kurella, V. A. Dorokhov, Z. K. Dem'yanets, O. A. Rekhlov

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 40:2262-2266

3-Phenyl-5-methyl(phenyl)-1H,3H-pyrimido[4′,5′:4,5]pyrimido[1,2-a]benzimi-dazole-2,4-diones were obtained by the cyclization of N-phenyl-N′-[3-ethoxycar-bonyl-4-methyl(phenyl)pyrimido [1,2-a]benzimidazol-2-yl]ureas by the action of potassium ca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::051e1a7bd19d036c94b42ae7e6ad9348
https://doi.org/10.1007/bf00961049

Zobrazit plný text záznamu

Synthesis of functionalized pyrimido[1,2-a]-benzimidazoles from (benzimidazol-2-yl)cyanamide and ?-dicarbonyl compounds using nickel complexes or salts

Autor: V. S. Bogdanov, Z. K. Dem'yanets, M. N. Bochkareva, V. A. Dorokhov, M. F. Gordeev

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:2354-2362

It was found that cyclocondensation of (benzimidazol-2-yl)cyanamide with β-diketones and β-ketoesters proceeds in the presence of β-ketoenolates or nickel(2+) acetate with the formation of 2-aminopyrimido[1,2-a]benzimidazole derivatives. Protonati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7265ebee747e413d5199083dfdeda6e9
https://doi.org/10.1007/bf00958851

Zobrazit plný text záznamu

Cycloaddition of ?-dialkylborylamino-n-heterocycles to cyanamides

Autor: L. G. Vorontsova, M. N. Bochkareva, M. G. Kurella, M. F. Gordeev, V. A. Dorokhov, Z. K. Dem'yanets

Publikováno v: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 39:346-350

α-Diisopropylaminopyridine and 2-dipropylborylamino-1-methylbenzimidazole react with cyanamides to give chelate [4+2]-cycloadducts. X-ray crystallography has been used to establish the molecular and crystal structure of the product of the reaction o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::905596fb4b1d4515cedb833293b196e5
https://doi.org/10.1007/bf00960666

Zobrazit plný text záznamu

Synthesis of compounds with a four-coordinate boron atom from 2-aminobenzazoles and nitriles

Autor: A. V. Vasil'ev, V. A. Dorokhov, A. R. Amamchyan, Z. K. Dem'yanets

Publikováno v: Russian Chemical Bulletin. 45:974-976

The reactions of 2-aminobenzazoles with nitriles in the presense of organoboranes results in the formation of novel tricyclic chelate boron compounds with N-(benzazol-2-yl)amidines as ligands, N-(Benzothiazol-2-yl)-p-chlorobenzamidine was prepared fr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::64a746dce3317c0ebacd07b6bac76e64
https://doi.org/10.1007/bf01431338

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání