SIOC English
有机化学
高级检索

有机化学 ›› 2009, Vol. 29 ›› Issue (10): 1664-1667. 上一篇    下一篇

研究简报

可循环利用硅胶吸附三氯化铈-碘化钠催化1,3-二酮的 烷基化无溶剂反应

叶家海* 徐国际 张文超 田桂蓉 王胜兵   

  1. (南京理工大学化工学院 南京 210094)
  • 收稿日期:2009-03-28 修回日期:2009-05-12 发布日期:2009-05-31

Recyclable SiO2-Supported CeCl3?7H2O-NaI Catalyzed Alkylation of 1,3-Dicarbonyl Compounds under Solvent-Free Conditions

Ye, Jiahai* Xu, Guoji Zhang, Wenchao Tian, Guirong Wang, Shengbing   

  1. (School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094)
  • Received:2009-03-28 Revised:2009-05-12 Published:2009-05-31

PDF

1178

在无溶剂条件下, 硅胶吸附的水合三氯化铈-碘化钠(CeCl3?7H2O-NaI)可以作为路易斯(Lewis)酸有效催化活泼亚甲基化合物和烯丙醇的直接烷基化反应, 得到较高产率的烷基化产物(62%～90%). 该催化剂经过简单处理至少可以循环利用四次, 第四次循环后产率达到78%.

关键词: 三氯化铈, 烷基化, 无溶剂, 催化

Alkylation of 1,3-dicarbonyl compounds with allylic alcohols was performed smoothly in good yields (62%～90%) under solvent-free conditions with SiO2-supportted CeCl3?7H2O-NaI as a highly efficient and recyclable catalyst. This catalyst system could be easily recovered and then reused in the alkylation at least four times without significant loss of catalytic activity.

Key words: cerium chloride, alkylation, solvent-free, catalysis