Solvent-free synthesis of benzoic esters and benzyl esters in novel Bronsted acidic ionic liquids under microwave irradiation

被引：60
|
作者：
Li, Xinzhong [1 ,2 ]
Eli, Wumanjiang [1 ]
Li, Gang [1 ,2 ]
机构：
[1] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 13期
关键词：
Bronsted acid; ionic liquid; Fischer esterification; aromatic esters;
D O I：
10.1016/j.catcom.2008.05.015
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Fischer esterifications of benzoic acid with a variety of alcohols and a variety of acids with benzyl alcohol could be promoted by four novel Bronsted acidic ionic liquids a-d that bear a benzyl on the imidazolium or pyridinium cation. The reactions were carried out smoothly without the need of added catalyst with good to excellent isolated yields (77-98.5%) under solvent-free microwave irradiation conditions in the presence of 50 mol% ionic liquids. These ionic liquids could be recovered easily and recycled three times without any significant loss in their catalytic activity. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：2264 / 2268
页数：5
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