Synthesis of a Basic Imidazolide Ionic Liquid and Its Application in Catalyzing Knoevenagel Condensation

Chinese Journal of Catalysis ›› 2008, Vol. 29 ›› Issue (10): 957-959.

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Synthesis of a Basic Imidazolide Ionic Liquid and Its Application in Catalyzing Knoevenagel Condensation

CHEN Xuewei1, LI Xuehui2*, SONG Hongbing2, LYangxiao2, WANG Furong2, HU Aixi1*

1 College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, Hunan, China; 2 School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China

Received:2008-10-25 Online:2008-10-25 Published:2008-10-25

Abstract

Abstract: A novel basic ionic liquid paired by 1-butyl-3-methylimidazolium cation and imidazolide anion (［bmim］Im) was synthesized. The basicity of ［bmim］Im appro aches to that of ［bmim］OH and is much stronger than that of ［bmim］OAc. In aq ueous solution at room temperature, 2% of ［bmim］Im showed good catalytic prope rties for Knoevenagel condensation between aromatic aldehyde and active methyle ne compounds with 86%-95% yield and 100% selectivity for yli denemalononitriles.

Key words: imidazolide anion, basic ionic liquid, catalysis, Knoevenagel condensation

CHEN Xuewei;LI Xuehui*;SONG Hongbing;LYangxiao;WANG Furong;HU Aixi*. Synthesis of a Basic Imidazolide Ionic Liquid and Its Application in Catalyzing Knoevenagel Condensation[J]. Chinese Journal of Catalysis, 2008, 29(10): 957-959.

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Synthesis of a Basic Imidazolide Ionic Liquid and Its Application in Catalyzing Knoevenagel Condensation

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