2-[1-diethylamino-3-methyl-2-(4-methoxyphenyl)but-2-enylideneamino]but-2-enedioic acid dimethyl ester 以
苯甲醚 为溶剂,
生成 6-diethylamino-5-(4-methoxyphenyl)-4-methyl-3,4-dihydropyridine-2,3-dicarboxylic acid dimethyl ester 、 6-diethylamino-5-(4-methoxyphenyl)-4-methylpyridine-2,3-dicarboxylic acid dimethyl ester