Copper-free Sonogashira cross-coupling reaction catalyzed by polymer-supported N-heterocyclic carbene palladium complex

被引：90

作者：

Kim, Jong-Ho ^{[1
]}

Lee, Dong-Ho ^{[1
]}

Jun, Bong-Hyun ^{[1
]}

Lee, Yoon-Sik ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151744, South Korea

来源：

TETRAHEDRON LETTERS | 2007年 / 48卷 / 40期

关键词：

polymer-supported catalyst; N-heterocyclic carbene (NHC); heterogeneous catalysis; palladium (Pd); sonogashira reaction; copper-free;

D O I：

10.1016/j.tetlet.2007.08.015

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A core-shell type of polymer-supported N-heterocyclic carbene (NHC) palladium catalyst was applied to Sonogashira cross-coupling reactions without copper cocatalyst under ambient atmosphere. This supported NHC-palladium complex efficiently catalyzed the copper-free Sonogashira reaction of various aryl iodides and bromides with terminal alkynes; the reaction exhibited high dependency on the temperature and the amount of base as well as its nature. In addition, this heterogeneous catalyst exhibited good reusability for the copper-free Sonogashira reaction. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：7079 / 7084

页数：6

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