催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (4): 693-698.DOI: 10.3724/SP.J.1088.2011.01238

• 研究论文 • 上一篇    下一篇

咪唑根碱性离子液体在水介质 Knoevenagel 反应中的催化作用

陈学伟, 宋红兵, 李雪辉*, 王芙蓉, 钱宇   

  1. 华南理工大学化学与化工, 学院制浆造纸工程国家重点实验室, 广东广州 510640
  • 收稿日期:2010-12-26 修回日期:2011-02-16 出版日期:2011-04-18 发布日期:2014-08-30

Catalytic Performance of Imidazolide Basic Ionic Liquid in Knoevenagel Reactions in Aqueous Media

CHEN Xuewei, SONG Hongbing, LI Xuehui*, WANG Furong, QIAN Yu   

  1. State Key Laboratory of Pulp & Paper Engineering, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2010-12-26 Revised:2011-02-16 Online:2011-04-18 Published:2014-08-30

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1011

被引次数

13

摘要： 报道了咪唑根 1-丁基-3-甲基咪唑 ([Bmim]Im) 碱性离子液体的合成与表征, 该离子液体具有强碱性和较好的热稳定性. 碱性离子液体[Bmim]Im 用于催化水介质中 Knoevenagel 反应, 发挥了碱催化剂与相转移催化剂双重作用. 此外, 离子液体[Bmim]Im 及其水溶液还具有良好的循环使用性能. 水介质、低催化剂用量、室温与高收率、简单的后处理操作是该催化体系的主要特点.

关键词: 咪唑根, 碱性, 离子液体, 水介质, Knoevenagel 反应

Abstract: The synthesis and characterization of the basic ionic liquid, 1-butyl-3-methylimidazolium imidazolide ([Bmim]Im), were reported intensively. [Bmim]Im has strong basicity and relatively good thermal stability, and it was used as a novel catalyst for the Knoevenagel reactions in aqueous media. [Bmim]Im acted as both a base catalyst and a phase transfer catalyst in the Knoevenagel reaction. In addition, [Bmim]Im together with aqueous media had good recycle ability. Aqueous media, low catalyst concentration, simple separation workup, ambient temperature, and high yield are the characteristic features of the present catalytic protocol.

Key words: imidazolide, basic, ionic liquid, aqueous media, Knoevenagel reaction