催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (10): 957-959.

• 研究快讯 • 上一篇    下一篇

咪唑阴离子型碱性离子液体的合成及其催化Knoevenagel缩合反应

陈学伟1,李雪辉2,宋红兵2,吕扬效2,王芙蓉2,胡艾希1   

  1. 1 湖南大学化学化工学院, 湖南长沙 410082; 2 华南理工大学化学与化工学院, 广东广州 510640
  • 收稿日期:2008-10-25 出版日期:2008-10-25 发布日期:2008-10-25

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. 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

PDF

1799

被引次数

106

摘要： 设计合成了由1-丁基-3-甲基咪唑阳离子与咪唑阴离子搭配的[bmim]Im新型碱性离子液体并对其碱性进行研究. [bmim]Im离子液体的碱性与[bmim]OH的碱性接近且强于[bmim]OAc. 在水溶液及室温条件下, 2%的[bmim]Im离子液体对系列芳香醛与活泼的亚甲基化合物之间的Knoevenagel缩合反应具有较好的催化性能,目标产物的收率达到86%～95%,选择性为100%. 同时,该催化剂体系具有良好的循环性能.

关键词: 咪唑阴离子, 碱性离子液体, 催化, Knoevenagel缩合

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