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有机化学
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有机化学 ›› 2009, Vol. 29 ›› Issue (9): 1470-1473. 上一篇    下一篇

研究简报

碱性离子液体催化的Claisen-Schmidt缩合反应

王媛媛 宫欣欣 戴立益*   

  1. (华东师范大学化学系 上海市绿色化学与化工过程绿色化重点实验室 上海 200062)
  • 收稿日期:2008-12-24 修回日期:2009-04-08 发布日期:2009-12-30
  • 通讯作者: 戴立益

Claisen-Schmidt Condensation Catalyzed by Basic Ionic Liquids

Wang, Yuanyuan Gong, Xinxin Dai, Liyi*   

  1. (Shanghai Key Laboratory of Green Chemistry and Chemical Process, Department of Chemistry,
    East China Normal University, Shanghai 200062)
  • Received:2008-12-24 Revised:2009-04-08 Published:2009-12-30
  • Contact: Dai, Liyi

PDF

3699

被引次数

20 | 5

合成了6种以N-甲基咪唑为基体的碱性离子液体, 以其作为催化剂, 在无溶剂条件下, 成功催化了Claisen-Schmidt缩合反应. 采用Hammett指示剂法对碱性离子液体的碱性强度和碱量进行表征. 实验结果表明, 此系列碱性离子液体对Claisen-Schmidt缩合反应具有较高的催化活性, 反应条件温和, 产物产率较高, 离子液体经简单处理后可多次循环使用, 催化活性未见明显降低.

关键词: 碱性离子液体, Claisen-Schmidt缩合反应, 碱性表征, 催化

Six basic ionic liquids based on imidazolium were synthesized and used as catalysts in Claisen-Schmidt condensation. Hammett titration method was used to determine the basic strength and basic amount of these ionic liquids. Claisen-Schmidt condensation proceeded efficiently in these ionic liquids at room temperature and the ionic liquids could be reused at least 8 times without obvious activity loss.

Key words: Claisen-Schmidt condensation, alkalinity characterization, catalysis, basic ionic liquid