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有机化学
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有机化学 ›› 2007, Vol. 27 ›› Issue (01): 87-91. 上一篇    下一篇

研究论文

壳聚糖亚胺环钯化合物的合成及其催化性能研究

刘蒲*,a，刘晔b，李晶玉a，刘一真a
卢伟鹏a，王向宇a，李利民a   

  1. (a郑州大学化学系 郑州 450052)
    (b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:2005-09-14 修回日期:2006-04-10 发布日期:2006-12-30
  • 通讯作者: 刘蒲

Synthesis of Chitosan-Supported Imine Palladacycles and Their Catalytic Performances

LIU Pu*,a,LIU Yeb,LI Jing-Yua,LIU Yi-Zhena,LU Wei-Penga
WANG Xiang-Yua,LI Li-Mina   

  1. (a Department of Chemistry, Zhengzhou University, Zhengzhou 450052)
    (b Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry,
    East China Normal University, Shanghai 200062)
  • Received:2005-09-14 Revised:2006-04-10 Published:2006-12-30
  • Contact: LIU Pu

PDF

1014

被引次数

20 | 5

壳聚糖与苯甲醛或其衍生物作用制得壳聚糖席夫碱, 再与氯化钯锂的甲醇溶液作用, 制得壳聚糖亚胺环钯催化剂. 该类催化剂对空气和水稳定, 对于苯乙烯与芳基碘的交叉偶联反应具有较高的催化活性和选择性, 经简单分离回收可重复使用多次. 为立体选择性合成各种取代的1,2-二苯乙烯提供了一种制备简单、实用的高活性绿色催化剂体系.

关键词: 壳聚糖席夫碱, 亚胺环钯化合物, 立体选择性, 偶联反应

Chitosan-supported imine palladacycle catalysts were synthesized from chitosan and benzaldehyde or its derivatives via grafting to form chitosan Schiff base, followed by treatment with Li2PdCl4 in methanol. These natural polymeric palladacycle catalysts are stable to air and moisture, and can catalyze the cross coupling reaction of aryl iodide with PhCH＝CH2 in high activity and selectivity. It can be reused several times by the simple filtration separation from the reaction mixture. It can provide an easy prepared and green catalytic system that is practical and highly active to synthesize stilbene and its derivatives.

Key words: imine palladacycle, coupling reaction, stereoselectivity, chitosan Schiff base