Synthesis and Characterisation of (Alkoxybenzimidazolin-2-ylidene)palladium Complexes: The Effect of Ancillary Ligands on the Behaviour of Precatalysts

被引：19
|
作者：
Baker, Murray V. [1 ]
Brown, David H. [2 ]
Simpson, Peter V. [1 ]
Skelton, Brian W. [1 ]
White, Allan H. [1 ]
机构：
[1] Univ Western Australia, Sch Biomed Biomol & Chem Sci, Crawley, WA 6009, Australia
[2] Curtin Univ Technol, Dept Appl Chem, Nanochem Res Inst, Bentley, WA 6102, Australia
来源：
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2009年 / 13期
基金：
澳大利亚研究理事会;
关键词：
N-Heterocyclic carbenes; Palladium; Benzimidazole; Homogeneous catalysis; Nitrogen heterocycles; Ligand effects; CROSS-COUPLING REACTIONS; N-HETEROCYCLIC CARBENES; PALLADIUM(II) COMPLEXES; ARYL CHLORIDES; HECK REACTION; CATALYSTS; PD; BROMIDES; SOLVENT; SYSTEMS;
D O I：
10.1002/ejic.200801154
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A series of new N-heterocyclic carbene (NHC)-palladium(II) complexes bearing electron-rich benzimidazolin-2-ylidene ligands are described and structurally and spectroscopically characterised. These (benzimidazolin-2-ylidene)palladium complexes bear butoxy groups to increase the solubility and perhaps influence the catalytic activity by increasing the electron density around the metal centre. The effect of varying the ancillary ligands is investigated, although these ligands do not appear to significantly alter the activity of the complexes as precatalysts. Preliminary studies indicate the complexes act as precatalysts with moderate activity in the Mizoroki-Heck and Suzuki-Miyaura coupling reactions. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
引用
收藏
页码：1977 / 1988
页数：12
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