2-Diethoxymethyl-6-methyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3,5-dicarboxylic acid 5-{2-[(4-chloro-benzyl)-methyl-amino]-ethyl} ester 3-ethyl ester 在
盐酸 作用下,
以
丙酮 为溶剂,
反应 1.5h,
以87.2%的产率得到2-Formyl-6-methyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3,5-dicarboxylic acid 5-{2-[(4-chloro-benzyl)-methyl-amino]-ethyl} ester 3-ethyl ester