3-(4-氯苯甲酰)丙酸 、
1-甲基-4-哌啶醇 以35.1 g of 1-methyl-4-piperidyl 3-p-chlorobenzoyl-4-dimethylamino-3-butenoate [obtainable by esterification of 3-p-chlorobenzoyl-propionic acid with 1-methyl-piperidin-4-ol to produce的产率得到1-methyl-4-piperidyl 3-p-chlorobenzoyl-4-dimethylamino-3-butenoate