期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 342-43, 期 -, 页码 11-17出版社
ELSEVIER
DOI: 10.1016/j.molcata.2011.04.002
关键词
Schiff base; Suzuki coupling; Gold; Homocoupling
资金
- DST, New Delhi
We present a study of the use of chloro-functionalized mesoporous silicas as supports for immobilization of Au(III) Schiff base complex, and use of this composite material as heterogeneous catalyst for homocoupling of aryl boronic acid. The catalyst was characterised by XRD, FTIR, UV-vis DRS, TG-DTA, etc. Catalyst was initially tested using the coupling of phenylboronic acid with bromo benzene in the presence of K2CO3 and with xylene as solvent. The reaction was also tested in the absence of the aryl halide and K2CO3. The results indicate that in our catalytic system base is not needed for the activation of phenylboronic acid, and its only role is to neutralize the boric acid. The optimized catalysts are also active in the coupling of a range of aryl boronic acids, and after four catalytic runs they show virtually no drop in activity. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据