期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 289, 期 1-2, 页码 14-21出版社
ELSEVIER
DOI: 10.1016/j.molcata.2008.03.019
关键词
carbon dioxide; cyclic carbonates; 2-oxazolidinones; 2-imidazolidinones; polyethylene glycol functionalized; phosphonium salt
Syntheses of various 2-oxazolidinones/2-imidazolidinones were carried out using polyethylene glycol functionalized phosphonium salt as an efficient homogenous recyclable catalyst via sequential addition of CO2, different epoxides and amino alcohols/alkylene diamines. The effects of various reaction parameters such as temperature, reaction time and catalyst concentration were investigated in detail. The catalyst was readily separated and reused. Excellent yields of 2-oxazolidinones/2-imidazolidinones and higher conversion of cyclic carbonates were observed. (C) 2008 Elsevier B.V. All rights reserved.
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