Ring closure reactions of 1, 6-diamino-4- （4-chlorophenyl）-2-oxopyridine-3, 5-dicarbonitrile （1） with various 1, 3-dielectrophiles namely, diethyl malonate, ethyl cthoxymethylene cyanoacetate, 2-cyano-3, 3-bis（me...Ring closure reactions of 1, 6-diamino-4- （4-chlorophenyl）-2-oxopyridine-3, 5-dicarbonitrile （1） with various 1, 3-dielectrophiles namely, diethyl malonate, ethyl cthoxymethylene cyanoacetate, 2-cyano-3, 3-bis（methylthio） acrylonitril, dimethyl acetylenedicarboxylate, dehydroacetic acid, chromon- 3-carbonitrile and 3-formylchromone led to the formation of the target bihetherocylicl,2,4-triazepines. The effect of 3-phenylazo-2, 4-pentandione, ethyl ct-cyano-ct-phenylazoacetate and 3, 1-benzoxazin-4-one derivative on 1 was also discussed.展开更多
文摘Ring closure reactions of 1, 6-diamino-4- （4-chlorophenyl）-2-oxopyridine-3, 5-dicarbonitrile （1） with various 1, 3-dielectrophiles namely, diethyl malonate, ethyl cthoxymethylene cyanoacetate, 2-cyano-3, 3-bis（methylthio） acrylonitril, dimethyl acetylenedicarboxylate, dehydroacetic acid, chromon- 3-carbonitrile and 3-formylchromone led to the formation of the target bihetherocylicl,2,4-triazepines. The effect of 3-phenylazo-2, 4-pentandione, ethyl ct-cyano-ct-phenylazoacetate and 3, 1-benzoxazin-4-one derivative on 1 was also discussed.
