Tuning the reactivity of dirhodium(II) complexes with axial N-heterocyclic carbene ligands:: The arylation of aldehydes

被引：113
作者：
Gois, Pedro M. P.
Trindade, Alexandre F.
Veiros, Luis F.
Andre, Vania
Duarte, M. Teresa
Afonso, Carlos A. M.
Caddick, Stephen
Cloke, F. Geoffrey N.
机构：
[1] CQFM, P-1049 Lisbon, Portugal
[2] CQE, Inst Super Tecn, Dept Engenharia Quim & Biol Complexo 1, P-1049 Lisbon, Portugal
[3] UCL, Dept Chem, London WC1H 0AJ, England
[4] Univ Sussex, Sch Life Sci, Dept Chem, Brighton BN1 9QJ, E Sussex, England
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2007年 / 46卷 / 30期
基金：
英国工程与自然科学研究理事会;
关键词：
aldehydes; arylation; carbene ligands; homogeneous catalysis; rhodium;
D O I：
10.1002/anie.200700924
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Chemical Equation Presented) Efficient dinuclear catalysts: A complex of {Rh2(OAc)4} with two N-heterocyclic carbenes (NHCs) at the axial positions catalyzes the arylation of aldehydes (see picture; R = alkyl, aryl). DFT calculations reveal subtle stereoelectronic effects resulting from the NHC coordination to the dirhodium(II) complex and suggest that complexes with one axial NHC ligand are the catalytically active species. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
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收藏
页码：5750 / 5753
页数：4
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