An intermediate for the synthesis of amlodipine, a process for the preparation thereof and the corresponding use are disclosed. The intermediate is ethyl 3-amino-4-(2-(phthalimido)ethoxy)crotonate and is of formula III
The process for the preparation thereof comprises reacting the acetoacetate of formula
with ammonium acetate; and the use thereof is for the preparation of the compound of formula
the process being conducted by reacting ethyl 3-amino-4-[2-(phthalimido)ethoxy]crotonate with a benzylidene derivative.
本发明公开了一种用于合成
氨氯地平的中间体、其制备工艺及其相应用途。该中间体为 3-
氨基-4-(2-(邻苯二甲
酰亚胺基)乙氧基)
巴豆酸乙酯,其结构式为式 III。
其制备工艺包括将式 III 的
乙酰乙酸乙酯与
乙酸铵反应;以及
的
乙酰乙酸酯与
乙酸铵反应;其用途是制备式 III 的化合物
该工艺通过 3-
氨基-4-[2-(邻苯二甲酰亚
氨基)乙氧基]
巴豆酸乙酯与苯亚甲基衍
生物反应进行。