申请人:Shanghai Jingxin Biomedical Co., Ltd.
公开号:US20150080608A1
公开(公告)日:2015-03-19
Method for preparing cinacalcet hydrochloride having the steps of heating (R)-1-naphthyl ethylamine (Formula I) and 3-(trifluoromethyl)benzene (Formula II)
wherein L is a halogen atom, methanesulfonate group (OMs), p-Toluenesulfonate (OTs), or triflate (OTf), in an organic solvent in presence of an inorganic base, refluxing until 3-(trifluoromethyl)benzene is completely consumed, obtaining a reaction mixture containing cinacalcet, and after treatment, obtaining cinacalcet hydrochloride having a formula of
The post treatment separates (R)-1-naphthyl ethylamine hydrochloride and cinacalcet hydrochloride by adjusting pH value, extraction, and other simple operations, and the (R)-1-naphthyl ethylamine obtained is recycled for preparing the next batch of cinacalcet hydrochloride.
制备盐酸西那卡塞的方法包括以下步骤:在有机溶剂中,加入无机碱的存在下,加热(R)-1-萘乙胺(式I)和3-(三氟甲基)苯(式II),其中L为卤素原子,甲磺酸基团(OMs),对甲苯磺酸基团(OTs)或三氟甲烷磺酸基团(OTf);回流至3-(三氟甲基)苯完全消耗,得到含有西那卡塞的反应混合物;经处理后,得到公式为的盐酸西那卡塞;后处理通过调节pH值、萃取和其他简单操作来分离(R)-1-萘乙胺盐酸盐和西那卡塞盐酸盐,所得的(R)-1-萘乙胺可回收用于制备下一批盐酸西那卡塞。