Polyvinylpolypyrrolidonium tribromide as new and metal-free catalyst for the formylation and trimethylsilylation of hydroxyl group  

作　　者：Arash Ghorbani-Choghamarani Hamid Goudarziafshar Parisa Zamani 

机构地区：[1]Department of Chemistry,Faculty of Science,Ilam University,P.O.Box 69315516 Ilam.Iran

出　　处：《Chinese Chemical Letters》2011年第10期1207-1210,共4页中国化学快报（英文版）

摘　　要：Trimethylsilylation of alcohols was achieved using 1,1,1,3,3,3-hexamethyldisilazane（HMDS） as silylating agent,in the presence of polyvinylpolypyrrolidonium tribromide in acetonitrile at room temperature.Also a variety of alcohols were converted into alkyl formates by ethyl formate and a catalytic amount of polyvinylpolypyrrolidonium tribromide under solvent free conditions at room temperature.Trimethylsilylation of alcohols was achieved using 1,1,1,3,3,3-hexamethyldisilazane（HMDS） as silylating agent,in the presence of polyvinylpolypyrrolidonium tribromide in acetonitrile at room temperature.Also a variety of alcohols were converted into alkyl formates by ethyl formate and a catalytic amount of polyvinylpolypyrrolidonium tribromide under solvent free conditions at room temperature.

关 键 词：Polyvinylpolypyrrolidone Polyvinylpolypyrrolidonium tribromide FORMYLATION SILYLATION Ethyl format 1 1 1 3 3 3-Hexamethyl-disilazane（HMDS） 

分 类 号：O643.32[理学—物理化学]