Ammonium persulphate promoted synthesis of polyethylene glycol entrapped potassium tribromide and its application in acylation and bromination of some selective organic compounds  

作　　者：Rupa Rani Dey Siddhartha Sankar Dhar 

机构地区：[1]Department of Chemistry,National Institute of Technology

出　　处：《Chinese Chemical Letters》2013年第10期866-868,共3页中国化学快报（英文版）

基　　金：the Department of Science and Technology,DST,New Delhi,India,for fnancial assistance received through a SERC fast track project(No.SR/FTP/CS-100/2007)

摘　　要：In this study, a new method of synthesis of polyethylene glycol supported potassium tribromide （PEG KBr3） and its application in acylation and bromination reactions are reported. Ammonium persulphate oxidizes I（Br to the corresponding tribromide which is entrapped by polyethylene glycol leading to stable PEG KBr3. The reagent is proved to be highly efficient for the acylation of variety of alcohols and bromination of activated aromatic substrates. The method is a mild, one pot reaction and involves no use of toxic reagents.In this study, a new method of synthesis of polyethylene glycol supported potassium tribromide （PEG KBr3） and its application in acylation and bromination reactions are reported. Ammonium persulphate oxidizes I（Br to the corresponding tribromide which is entrapped by polyethylene glycol leading to stable PEG KBr3. The reagent is proved to be highly efficient for the acylation of variety of alcohols and bromination of activated aromatic substrates. The method is a mild, one pot reaction and involves no use of toxic reagents.

关 键 词：Potassium bromide Polyethylene glycol （PEG） Ammonium per sulphate Acylation Bromination 

分 类 号：O631.3[理学—高分子化学]