化学学报 ›› 2002, Vol. 60 ›› Issue (3): 528-531. 上一篇    下一篇

研究论文

氯铝酸室温离子液体中缩醛和缩酮反应

乔焜;邓友全   

  1. 中国科学院兰州化学物理研究所,兰州(730000)
  • 发布日期:2002-03-15

Acetalization and Ketalization Reactions in Chloroaluminate Room Temperature Ionic Liquids

Qiao Kun;Deng Youquan   

  1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Centre for Ecological and Green Chemistry, Lanzhou Institute of Chemical Physics, The Chinese Academy of Sciences,Lanzhou(730000)
  • Published:2002-03-15

以取代硫酸等无机酸,实现清洁合成为目的,在1-烷基吡啶和1-甲基-3- 烷基咪唑季胺盐与无水AlCl_3构成的室温离子液体为催化剂和反应介质中,尝试了 醛和酮与甲醇的缩合反应。醛与甲醇反应,产物以缩醛为主,酮与甲醇反应则有相 当量的Aldol缩合产物。依反应底物不同,可获得中至高的转化率和选择性。同时 ,一些产物因不溶于离子液体中而分层,便于产物分离。

关键词: 缩合反应, 吡啶 P, 咪唑 P, 季胺, 酮, 甲醇

Acetalization, ketalization and aldol reactions were carried out using chloroaluminate room temperature ionic liquids consisting of anhydrous AlCl_3 and 1-alkylpyridinium or 1-methyl 3-alkylimidazolium quaternary ammonium salts as reaction medium with high conversion and selectivity as well as easy separation of products.

Key words: CONDENSATION REACTION, PYRIDINE P, GLYOXALINE P, QUATERNARY AMMONIUM COMPOUNDS, KETONE, METHANOL

中图分类号: