Sulfonic acid functionalized silica:: A remarkably efficient heterogeneous reusable catalyst for α-monobromination of carbonyl compounds using N-bromosuccinimide

被引:62
|
作者
Das, B [1 ]
Venkateswarlu, K [1 ]
Holla, H [1 ]
Krishnaiah, M [1 ]
机构
[1] Indian Inst Chem Technol, Organ Chem Div 1, Hyderabad 500007, Andhra Pradesh, India
关键词
sulfonic acid functionalized silica; carbonyl compound; alpha-monobromination; NBS; heterogeneous recyclable catalyst;
D O I
10.1016/j.molcata.2006.03.011
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
Sulfonic acid functionalized silica has been found to be a highly efficient and versatile catalyst for alpha-monobromination of carbonyl compounds (cyclic and acyclic ketones, 1,3-diketones, beta-ketoesters, lactones, coumaranones and lactams) using N-bromosuccinimide under mild reaction conditions. The alpha-monobrominated products were obtained in very high yields and in short reaction times. The catalyst works under heterogeneous conditions and can be recyclable. (c) 2006 Elsevier B.V. All rights reserved.
引用
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页码:107 / 111
页数:5
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