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
收藏
页码：7079 / 7084
页数：6
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