β-氨基巴豆酸甲酯 、
2,3-二氯苯甲醛 、
acetoacetic acid 6-hydroxyhexyl ester 在
resultant product 、 silica gel 作用下,
以
乙醇 为溶剂,
反应 6.0h,
以to obtain 34.7 g (yield 38.0%) of 1,4-dihydro-2,6-dimethyl-4-(2,3-dichlorophenyl)-3-methoxycarbonylpyridine-5-carboxylic acid 6-hydroxyhexyl ester as an oil的产率得到1,4-dihydro-2,6-dimethyl-4-(2,3-dichlorophenyl)-3-methoxycarbonylpyridine-5-carboxylic acid 6-hydroxyhexyl ester