Organic-inorganic hybrid polymer-encapsulated magnetic nanobead catalysts

被引：58

作者：

Arai, Takayoshi ^{[1
]}

Sato, Toru ^{[1
]}

Kanoh, Hirofumi ^{[1
]}

Kaneko, Katsumi ^{[1
]}

Oguma, Koichi ^{[2
]}

Yanagisawa, Akira ^{[1
]}

机构：

[1] Chiba Univ, Dept Chem, Grad Sch Sci, Chiba 2638522, Japan

[2] Chiba Univ, Grad Sch Engn, Dept Appl Chem & Biotechnol, Chiba 2638522, Japan

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2008年 / 14卷 / 03期

关键词：

chelates; heterogeneous catalysis; hybrid polymer; magnetic properties; oxidation; sustainable chemistry;

D O I：

10.1002/chem.200701371

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new strategy for the encapsulation of magnetic nanobeads was developed by using the in situ self-assembly of an organic-inorganic hybrid polymer. The hybrid polymer of {[Cu(bpy)(BF4)(2)(H2O)(2)](bpy)}(n) (bpy=4,4'-bipyridine) was constructed on the surface of amino-functionalized magnetic beads and the resulting hybrid-polymer-encapsulated beads were utilized as catalysts for the oxidation of silyl enolates to provide the corresponding a-hydroxy carbonyl compounds in high yield. After the completion of the reaction, the catalyst was readily recovered by magnetic separation and the recovered catalyst could be reused several times. Because the current method did not require complicated procedures for incorporating the catalyst onto the magnetic beads, the preparation and the application of various other types of organic-inorganic hybrid-polymer-coated magnetic beads could be possible.

引用

页码：882 / 885

页数：4

共 83 条

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