Unsymmetric-1,3-disubstituted imidazolium salt for palladium-catalyzed Suzuki-Miyaura cross-coupling reactions of aryl bromides

被引：23

作者：

Yu, HW

Shi, JC ^{[1
]}

Zhang, H

Yang, PY

Wang, XP

Jin, ZL

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[2] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2006年 / 250卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

palladium; imidazol-2-ylidene; Suzuki-Miyaura reaction; aryl bromides; catalysis;

D O I：

10.1016/j.molcata.2006.01.034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of 1-(ferrocenylethyl)-3-substituted-imidazolium salts [3-substitute=2,6-di(iso-propyl)phenyl (1a), 2,4,6-trimethylphenyl (1b), tertbutyl (1c), I-Ad (1d), cyclohexyl (1e)] have been synthesized from a racemic ferrocertylethyl acetate and the corresponding N-substituted imidazole in high yields (70-94%). A combination of Pd(OAc)(2) and 1a-d was found to form an excellent catalyst system for the Suzuki-Miyaura cross-coupling reactions of aryl bromides with phenylboronic acid in the presence of Cs2CO3 (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：15 / 19

页数：5

共 29 条

[1] Sterically demanding, bioxazoline-derived N-heterocyclic carbene ligands with restricted flexibility for catalysis [J].