ethyl 3-carbamoyl-2-[(3-cyano-8-methoxychromen-2-ylidene)amino]-5,7-dihydro-4H-thieno[2,3-c]pyridine-6-carboxylate 以
N,N-二甲基甲酰胺 为溶剂,
反应 3.0h,
生成
ethyl 4-oxo-2-(2-imino-8-methoxycoumarin-3-yl)-3,4,5,6,7,8-hexahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidine-7-carboxylate