Copper-catalyzed Ullmann-type synthesis of diaryl ethers assisted by salicylaldimine ligands

被引：14
|
作者：
Qian, Cun-Wei [1 ]
Lv, Wen-Lin [1 ]
Zong, Qian-Shou [2 ]
Wang, Mao-Yuan [1 ]
Fang, Dong [1 ]
机构：
[1] Yancheng Teachers Univ, Sch Chem & Chem Engn, Yancheng 224051, Peoples R China
[2] Jiaxing Univ, Sch Biol & Chem Engn, Jiaxing 314001, Peoples R China
来源：
CHINESE CHEMICAL LETTERS | 2014年 / 25卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Copper catalyst; Salicylaldimine ligands; Ullmann coupling; Diaryl ethers; C-O BOND; ARYL HALIDES; BIARYL ETHER; REDUCTIVE ELIMINATION; COUPLING REACTIONS; EFFICIENT LIGAND; PHENOLS; BASE; MILD; COMPLEXES;
D O I：
10.1016/j.cclet.2013.11.036
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of salicylaldimine ligands were designed to promote the copper-catalyzed Ullmann cross-coupling reaction. After a screening process, 2-((2-isopropylphenylimino)methyl)phenol was found to serve as a good supporting ligand for this reaction. Employing this Schiff-base ligand as a new supporting ligand, the copper-catalyzed coupling reactions of aryl bromides and aryl iodides with various phenols successfully proceeded in good yields under mild conditions. Various diaryl ethers were obtained with excellent yields in dioxane in the presence of K3PO4 and a catalytic amount of copper(I) salt. (C) 2013 Cun-Wei Qian. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
引用
收藏
页码：337 / 340
页数：4
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