A novel pyridine-bridged bis-benzimidazolylidene pincer palladium complex:: Synthesis and catalytic properties

被引：79

作者：

Tu, Tao ^{[1
]}

Malineni, Jagadeesh ^{[1
]}

Doetz, Karl Heinz ^{[1
]}

机构：

[1] Univ Bonn, Kekule Inst Organ Chem & Biochem, D-53121 Bonn, Germany

来源：

ADVANCED SYNTHESIS & CATALYSIS | 2008年 / 350卷 / 11-12期

关键词：

benzimidazoles; carbenes; Heck reaction; palladium; Suzuki coupling;

D O I：

10.1002/adsc.200800244

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A novel pyridine-bridged bis-benzimidazolylidene CNC pincer complex 1 was synthesized from cheap, commercially available precursors under microwave assistance in moderate yield. It catalyzes cross-coupling reactions of aryl halides with alkyl acrylates (Heck reaction) and phenylboronic acid (Suzuki reaction) under aerobic conditions with extremely high turn-over numbers (frequencies) indicating that a planar extension of the pi-system by henzannelation significantly increases the catalytic activity even with trace amounts of catalyst loading.

引用

页码：1791 / 1795

页数：5

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ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (22) :2494-2497

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