N-heterocyclic carbenes Part 26.: N-heterocyclic carbene complexes of palladium(0):: synthesis and application in the Suzuki cross-coupling reaction

被引：312

作者：

Böhm, VPW ^{[1
]}

Gstöttmayr, CWK ^{[1
]}

Weskamp, T ^{[1
]}

Herrmann, WA ^{[1
]}

机构：

[1] Tech Univ Munich, Inst Anorgan Chem, D-85747 Garching, Germany

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2000年 / 595卷 / 02期

关键词：

palladium; N-heterocyclic carbenes; cross coupling; carbon-carbon bond formation; Suzuki reaction;

D O I：

10.1016/S0022-328X(99)00590-2

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Palladium(0) complexes of N-heterocyclic carbenes (NHC) are easily obtained starting from the free carbene and bis(tri-ortho- tolylphosphine)palladium(0) by ligand exchange. The complexes [(R)N(H)C=C(H)N(R)C](2)Pd of various 1,3-disubstituted imidazolin-2-ylidenes have been prepared by this method (R = mesityl, t-Bu, i-Pr, cyclohexyl). The activities of these complexes as catalysts for the activation of chloroarenes in the Suzuki cross-coupling reaction were evaluated. Turnover frequencies up to 552 (mol product x mol Pd-1 x h(-1)] were achieved without specific optimization of the system. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：186 / 190

页数：5

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