2-Acylamino-3-chloroacrylonitriles, Promising Reagents for Heterocyclization
摘要:
2-Acylamino-3-chloroacrylonitriles prepared by treating available N-(1,2,2-trichloroethyl)am ides of carboxylic acids with sodium cyanide readily undergo cyclization in the presence of excess hydrazine hydrate. The cyclization products, 5-amino-4-acylaminopyrazoles, were applied to the synthesis of new imidazo[4,5-c]pyrazole and pyrazolo[1.5 0]pyrimidine derivatives.
2-Acylamino-3-chloroacrylonitriles, Promising Reagents for Heterocyclization
摘要:
2-Acylamino-3-chloroacrylonitriles prepared by treating available N-(1,2,2-trichloroethyl)am ides of carboxylic acids with sodium cyanide readily undergo cyclization in the presence of excess hydrazine hydrate. The cyclization products, 5-amino-4-acylaminopyrazoles, were applied to the synthesis of new imidazo[4,5-c]pyrazole and pyrazolo[1.5 0]pyrimidine derivatives.
2-Acylamino-3-chloroacrylonitriles, Promising Reagents for Heterocyclization
作者:S. V. Popil'nichenko、B. S. Brovarets、B. S. Drach
DOI:10.1023/b:rujo.0000034944.88382.28
日期:2004.2
2-Acylamino-3-chloroacrylonitriles prepared by treating available N-(1,2,2-trichloroethyl)am ides of carboxylic acids with sodium cyanide readily undergo cyclization in the presence of excess hydrazine hydrate. The cyclization products, 5-amino-4-acylaminopyrazoles, were applied to the synthesis of new imidazo[4,5-c]pyrazole and pyrazolo[1.5 0]pyrimidine derivatives.