Dimethyl carbonate synthesis catalyzed by DABCO-derived basic ionic liquids via transesterification of ethylene carbonate with methanol

被引：96
|
作者：
Yang, Zhen-Zhen
He, Liang-Nian [1 ]
Dou, Xiao-Yong
Chanfreau, Sebastien
机构：
[1] Nankai Univ, State Key Lab, Tianjin 300071, Peoples R China
来源：
TETRAHEDRON LETTERS | 2010年 / 51卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Dimethyl carbonate; Ionic liquid; Transesterification reaction; Ethylene carbonate; QUATERNARY AMMONIUM-SALT; CYCLIC CARBONATES; PROPYLENE CARBONATE; CHEMICAL FIXATION; HIGHLY EFFICIENT; DIOXIDE; EPOXIDES; CO2; SILICA; PERFORMANCE;
D O I：
10.1016/j.tetlet.2010.03.114
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Easily prepared DABCO-derived (1,4-diazobicyclo[2.2.2]octane) basic ionic liquids were developed for an efficient synthesis of dimethyl carbonate (DMC) via the transesterification of ethylene carbonate (EC) with methanol. 1-Butyl-4-azo-1-azoniabicyclo[2.2.2]octane hydroxide ([C(4)DABCO]OH) exhibited high catalytic activity and 81% DMC yield together with 90% EC conversion was obtained under mild reaction conditions. Notably, the catalyst could be recycled for four times without loss of catalytic activity. Moreover, a possible mechanism was also discussed. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2931 / 2934
页数：4
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