期刊
TETRAHEDRON LETTERS
卷 49, 期 21, 页码 3466-3470出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.03.108
关键词
gadolinium triflate; Michael additions; heterogeneous catalysis; acrylonitrile; methyl acrylate
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.
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