Imidazolium-based polymer supported gadolinium triflate as a heterogeneous recyclable Lewis acid catalyst for Michael additions

被引：34

作者：

Alleti, Ramesh ^{[1
]}

Oh, Woon Su ^{[1
]}

Perambuduru, Meher ^{[1
]}

Ramana, C. V. ^{[2
]}

Reddy, V. Prakash ^{[1
]}

机构：

[1] Missouri Univ Sci & Technol, Dept Chem, Rolla, MO 65409 USA

[2] Univ Texas El Paso, Dept Met & Mat Engn, El Paso, TX 79968 USA

来源：

TETRAHEDRON LETTERS | 2008年 / 49卷 / 21期

关键词：

gadolinium triflate; Michael additions; heterogeneous catalysis; acrylonitrile; methyl acrylate;

D O I：

10.1016/j.tetlet.2008.03.108

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A heterogeneous Lewis acid catalytic system has been developed by incorporating gadolinium triflate on to poly[styrene-co-(1-((4-vinylphenyl)methyl)-3-methylimidazolium) tetrafluoroborate] (1-Gd(OTf)(3)), and the catalytic activity of this system has been examined for Michael additions of amines and thiols to alpha, beta-unsaturated esters and acrylonitrile. The reactions proceed in moderate to excellent yields in the presence of catalytic system 1-Gd(OTf)(3). The catalytic system could be efficiently recycled and reused. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3466 / 3470

页数：5

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