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

作者：Yang, Zhen-Zhen; He, Liang-Nian^*; Dou, Xiao-Yong; Chanfreau, Sebastien

来源：Tetrahedron Letters, 2010, 51(21): 2931-2934.

DOI：10.1016/j.tetlet.2010.03.114

• Dimethyl carbonate
• Ionic liquid
• Transesterification reaction
• Ethylene carbonate

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.

• 出版日期2010-5-26
• 单位南开大学