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

被引：111
|
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.
引用
收藏
页码：5750 / 5753
页数：4
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