Palladium complexes with tridentate pincer bis-carbene Ligands as efficient catalysts for C-C coupling

被引：363

作者：

Loch, JA

Albrecht, M

Peris, E

Mata, J

Faller, JW

Crabtree, RH

机构：

[1] Yale Univ, Dept Chem, New Haven, CT 06520 USA

[2] Univ Jaume 1, Dept Quim Inorgan & Organ, Castellon de La Plana 12080, Spain

来源：

ORGANOMETALLICS | 2002年 / 21卷 / 04期

关键词：

D O I：

10.1021/om010852n

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis and X-ray crystallographic characterization of a Pd complex (3) with a rigid C,N,C-tridentate pincer carbene ligand are described. At high temperatures (165 degreesC) it is an active and robust catalyst in the Heck reaction. Complex 3 gives some of the highest turnover numbers yet reported for coupling with aryl chlorides. Time dependence, reuse, and Heck reaction conditions are discussed for 3. Data with F- as base did not support Shaw's Heck mechanism. Suzuki and Sonogashira coupling reactions are also catalyzed by 3. The palladium carbene complex 5, containing an analogous C,N-bidentate ligand, is compared to 3 in terms of stability, catalytic activity, and reaction profile in the Heck reaction.

引用

页码：700 / 706

页数：7

共 48 条

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