期刊
CATALYSIS COMMUNICATIONS
卷 9, 期 13, 页码 2264-2268出版社
ELSEVIER
DOI: 10.1016/j.catcom.2008.05.015
关键词
Bronsted acid; ionic liquid; Fischer esterification; aromatic esters
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.
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