The present invention relates to a process for the preparation of a hydrogen chloride (HCl) salt of a compound of formula (I) wherein Y
1
and Y
2
are independently F or Cl, preferably F, said compound of formula (I) containing the cis-isomer and the trans-isomer, wherein the process comprises (1) providing the compound of formula (I) comprised in a first suitable solvent; and (2) treating the compound of formula (I) comprised in the first suitable solvent with HCl comprised in a second suitable solvent to obtain the HCl salt of the compound of formula (I).
本发明涉及一种制备公式(I)化合物的
氯化氢(HCl)盐的方法,其中Y1和Y2独立地为F或Cl,优选为F,所述公式(I)化合物含有顺式异构体和反式异构体,其中该方法包括(1)提供所述公式(I)化合物,该化合物包含在第一适宜溶剂中;以及(2)用第二适宜溶剂中的HCl处理所述公式(I)化合物,以获得公式(I)化合物的HCl盐。