2,4-二氯苯甲醛 、
ethyl 3-amino-3-ethoxypropenoate 以
alcohol 为溶剂,
反应 6.0h,
以2-amino-4-(2,4-dichlorophenyl)-6-ethoxy-4,5-dihydropyridine-3,5-dicarboxylic acid diethyl ester of melting point 98° C (ethyl acetate/ petroleum ether) is obtained的产率得到6-amino-4-(2,4-dichloro-phenyl)-2-ethoxy-3,4-dihydro-pyridine-3,5-dicarboxylic acid diethyl ester