申请人:Hoechst Marion Roussel Inc.
公开号:US05760267A1
公开(公告)日:1998-06-02
The present invention relates to a novel process for the preparation of 1-(3-trialkylsilylphenyl)-2,2,2-trifluoromethyl ethanones from 1-halo-3-trialkylsilanyl-benzenes. 1-(3-trialkylsilylphenyl)-2,2,2-trifluoromethyl ethanones are useful for the treatment of Alzheimer's disease and senile dementia. In addition, the present invention relates to a novel process for purifying 1-(3-trialkylsilylphenyl)-2,2,2-trifluoromethyl ethanones utilizing a novel extraction method.
本发明涉及一种从1-卤代-3-三烷基硅基苯制备1-(3-三烷基硅基苯基)-2,2,2-三氟甲基乙酮的新型工艺。1-(3-三烷基硅基苯基)-2,2,2-三氟甲基乙酮对治疗阿尔茨海默病和老年性痴呆症有用。此外,本发明还涉及一种利用新型萃取方法纯化1-(3-三烷基硅基苯基)-2,2,2-三氟甲基乙酮的新型工艺。