4-(4-Chloro-phenyl)-5-cyano-6-mercapto-2-methyl-1,4-dihydro-pyridine-3-carboxylic acid ethyl ester; compound with piperidine 在
盐酸 作用下,
以
乙醇 为溶剂,
以57%的产率得到4-(4-Chloro-phenyl)-5-cyano-2-methyl-6-thioxo-1,4,5,6-tetrahydro-pyridine-3-carboxylic acid ethyl ester