19-08-2014, 10:57 AM
3-(Diethylamino) -7-imino -7H-[1] benzopyrano [3\',2\':3,4] pyrido [1,2a] benzimidazole-6-caronitrile treated in glacial acetic acid with sodium cyanide and lead tetra acetate to yield N-[3- (Diethylamino) -6,10- dicarbonitrile-7H-[1] benzopyrano [3\',2\':3,4] pyrido [1,2 -a]benzimidazole) -7-ylidene] (un) substituted amides Further this dye was condensed with various aryl or hetaryl carbonyl chloride to give novel cyano coumarin compounds.
3-(Diethylamino) -7-imino -7H-[1] benzopyrano [3\',2\':3,4] pyrido [1,2a] benzimidazole-6-caronitrile treated in glacial acetic acid with sodium cyanide and lead tetra acetate to yield N-[3- (Diethylamino) -6,10- dicarbonitrile-7H-[1] benzopyrano [3\',2\':3,4] pyrido [1,2 -a]benzimidazole) -7-ylidene] (un) substituted amides Further this dye was condensed with various aryl or hetaryl carbonyl chloride to give novel cyano coumarin compounds.