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化学学报
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化学学报 ›› 2002, Vol. 60 ›› Issue (1): 162-165. 上一篇    下一篇

研究论文

壳聚糖希夫碱铜多相催化剂催化苯乙烯环丙烷化反应研究

孙伟;夏春谷;王爱勤   

  1. 中国科学院兰州化学物理研究所;羰基合成与选择氧化国家重点实验室
  • 发布日期:2002-01-15

Cyclopropanation of styrene catalyzed by chitosan schiff-base copper (Ⅱ) heterogeneous catalyst

SUN WEI;XIA CHUNGU;WANG AIQIN   

  • Published:2002-01-15

PDF

686

被引次数

80 | 14

壳聚糖希夫碱铜催化剂催化苯乙烯环丙烷化反应，得到了非常好的化学收率，同时还得到了17.1%ee和33.3:66.7的顺反比。此外，催化剂重复使用数次仍保持很高的活性。

关键词: 壳聚糖, 不对称合成, 铜, 多相催化, 苯乙烯, 环丙烷化, 立体选择性, 环丙烷 P, 席夫碱

Chitosan Schiff-base copper (Ⅱ) catalyst catalyzed cyclopropanation reaction of styrene with ethyl diazoacetate. The catalyst showed high activity in cyclopropanation. Moderate stereoseletivity (up to 17.1% ee), with the ratio of trans to ics being 66.7:33.3 was obtained at 60℃, Furthermore, the catalyst could be recycled without loss of cyclopropanation activity.

Key words: CHITOSAN, ASYMMETRICAL SYNTHESIS, COPPER, HETERGENOUS CATALYSIS, STYRENE, STEREOSELECTIVITY, CYCLOPROPANE P, SCHIFF BASE

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