Lanthanide complexes of the monovacant Dawson polyoxotungstate [α1-P2W17O61]10- as selective and recoverable Lewis acid catalysts

被引：161

作者：

Boglio, Cecile

Lemiere, Gilles

Hasenknopf, Bernold

Thorimbert, Serge

Lacote, Emmanuel

Malacria, Max

机构：

[1] Univ Paris 06, Inst Chim Mol, FR 2769, Lab Chim Organ,CNRS,UMR 7611, F-75252 Paris 05, France

[2] Univ Paris 06, Inst Chim Mol, FR 2769, Lab Chim Inorgan,CNRS,UMR 7071, F-75252 Paris 05, France

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2006年 / 45卷 / 20期

关键词：

aldol reaction; cycloaddition; lanthanides; Lewis acids; polyoxometalates;

D O I：

10.1002/anie.200600364

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Chemical Equation Presented) Catalytic cornerstone: Lanthanide(III) complexes of a lacunary Dawson-type polyoxometalate catalyze Lewis acid mediated reactions (see figure, TMS = trimethylsilyl). The compounds (NBu 4)5H2[α1-Ln(H 2O)4P2W17O61] (Ln = Yb, Sm, Eu, La) are much more chemoselective than the lanthanide triflates. Furthermore, the polyoxotungstic framework can play a role, presumably through H-bonding to the substrates. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.

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页码：3324 / 3327

页数：4

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