N,N-dimethyl-3,3-diaminoacrylic acid ethyl ester 、
间硝基苯甲醛 在
乙醚 、
异丙醇 作用下,
以
乙醇 为溶剂,
反应 4.0h,
以the yellow-orange colored crystals of 2-amino-6-dimethylamino-4-(3'-nitrophenyl)-4,5-dihydropyridine-3,5-dicarboxylic acid diethyl ester, of melting point 149° C, were obtained的产率得到6-amino-2-dimethylamino-4-(3-nitro-phenyl)-3,4-dihydro-pyridine-3,5-dicarboxylic acid diethyl ester