Disclosed are a method for preparing a dabigatran etexilate intermediate, and an intermediate compound. The method for preparing a dabigatran etexilate intermediate 4 comprises: reacting a compound 3 with a C1-C3 alkyl alcohol solution of methylamine in an organic solvent, wherein, X = chlorine, bromine, or iodine. Also disclosed are an intermediate compound 3 and a preparation method thereof. The method for preparing a dabigatran etexilate intermediate of the present invention has the advantages of simple process, easy operation, high yield, and easy purification, thus being suitable for industrial production.
本发明公开了一种制备
达比加群酯中间体的方法和一种中间体化合物。 制备
达比加群酯中间体 4 的方法包括:将化合物 3 与
甲胺的 C1-C3 烷醇溶液在有机溶剂中反应,其中,X =
氯、
溴或
碘。 还公开了一种中间体化合物 3 及其制备方法。 本发明的
达比加群酯中间体的制备方法具有工艺简单、操作方便、收率高、易于纯化等优点,因此适合工业化生产。