5-Cyano-4-(4-dimethylamino-phenyl)-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,
反应 2.0h,
以18%的产率得到ethyl 5-cyano-4-[4-(dimethylamino)phenyl]-2-methyl-6-sulfanylidene-1H-pyridine-3-carboxylate