PROCESS FOR THE PREPARATION OF 2,5-BIS-(2,2,2-TRIFLUOROETHOXY)-N-(2-PIPERIDYL-METHYL)-BENZAMIDE AND SALTS THEREOF
申请人:Zicane Daina
公开号:US20100056794A1
公开(公告)日:2010-03-04
Process for the preparation of 2,5-bis(2,2,2-trifluoroethoxy)-N-(2-piperidylmethyl)benzamide, its pharmaceutically acceptable salts and important intermediates thereof that involves 1,4-dihalotoluenes as starting material. The method involves a technique for preparing the starting material 2,5-bis(2,2,2-trifluoroethoxy)toluene in high yields by reacting 1,4-dibromotoluene with 2,2,2-trifluoroethanol in presence of a base and a copper-containing catalyst.
制备2,5-双(2,2,2-三氟乙氧基)-N-(2-哌啶甲基)苯甲酰胺及其药学上可接受的盐和重要中间体的过程,其起始材料为1,4-二卤代甲苯。该方法涉及一种技术,通过在碱和含铜催化剂的存在下将1,4-二溴代甲苯与2,2,2-三氟乙醇反应,高产率制备起始材料2,5-双(2,2,2-三氟乙氧基)甲苯。