Ethyl 2-[(2-cyano-3-methoxy-1-methylsulfanyl-3-oxoprop-1-enyl)amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate 在
氨 作用下,
以
乙醇 为溶剂,
以75%的产率得到Cyano-[4-oxo-3,4,5,6,7,8-hexahydro-1H-benzo[4,5]thieno[2,3-d]pyrimidin-(2E)-ylidene]-acetic acid methyl ester