Ammonium persulphate promoted synthesis of polyethylene glycol entrapped potassium tribromide and it

• 作 者: Rupa Rani Dey Siddhartha Sankar Dhar
• 机 构: Department of Chemistry,National Institute of Technology,
• 出 处: Chinese Chemical Letters
• 发表日期: 2013年10期
• 关键词: glycol polyethylene potassium alcohols promoted aromatic hexane acetate reagent

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 KBr to the corresponding tribromide which is entrapped by polyethylene glycol leading to stable PEG KBr3. The reagent is proved to be highly effcient 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 KBr to the corresponding tribromide which is entrapped by polyethylene glycol leading to stable PEG KBr3. The reagent is proved to be highly effcient for the acylation of variety of alcohols and bromination of activated aromatic substrates. The method is proved to be highly effcient