申请人:Shanghai Syncores Technologies Inc. Ltd
公开号:US20160280646A1
公开(公告)日:2016-09-29
The invention relates to a method for synthesizing an intermediate of Apixaban comprising reacting a compound of formula I with 5-chloro-valeryl chloride in the presence of inorganic base in an inert solvent to obtain a compound of formula II, with the reaction formula of (A), wherein R is selected from nitro group and the group (B). The method is mild in reaction condition, simple in operation, easy in purification, inexpensive in production cost, environmental-friendly, and suitable for industrial production.
这项发明涉及一种合成阿匹沙班中间体的方法,包括在惰性溶剂中,在无机碱的存在下,将式I化合物与5-氯戊酰氯反应,得到式II化合物,反应式为(A),其中R选自硝基和基团(B)。该方法反应条件温和,操作简单,易于纯化,生产成本低廉,环保,并适用于工业生产。