1-(1-Alkylsulfonic)-3-methylimidazolium chloride as a reusable Brφnsted acid catalyst for the regioselective azidolysis of epoxides under solvent-free conditions  

作　　者：Sobhan Rezayati Eshagh Rezaee Nezhad Rahimeh Hajinasiri 

机构地区：[1]Department of Chemistry,Payame Noor University [2]Chemistry Department,Qaemshahr Branch,Islamic Azad University

出　　处：《Chinese Chemical Letters》2016年第6期974-978,共5页中国化学快报（英文版）

基　　金：support of this study by the Payame Noor University(PNU)of Ilam

摘　　要：In this study, 1-（1-alkylsulfonic）-3-methylimidazolium chloride as a new, green, and reusable Br？nsted acid catalyst was prepared. In this protocol, we used for the regioselective ring-opening reactions of various epoxiodes with sodium azide to afford the corresponding b-azido alcohols in excellent yields and short reaction time under mild and neutral reaction conditions. This method offers several advantages including excellent regioselectivity, clean reactions, simple work-up procedure, a recyclable catalyst,and use of an eco-friendly catalyst.In this study, 1-（1-alkylsulfonic）-3-methylimidazolium chloride as a new, green, and reusable Br？nsted acid catalyst was prepared. In this protocol, we used for the regioselective ring-opening reactions of various epoxiodes with sodium azide to afford the corresponding b-azido alcohols in excellent yields and short reaction time under mild and neutral reaction conditions. This method offers several advantages including excellent regioselectivity, clean reactions, simple work-up procedure, a recyclable catalyst,and use of an eco-friendly catalyst.

关 键 词：Ionic liquids(ILs) β-Azido alcohols Ring opening REGIOSELECTIVE Br?nsted acid 

分 类 号：O643.36[理学—物理化学]