Green and efficient diazotization and diazo coupling reactions on clays

被引：104

作者：

Dabbagh, Hossein A. ^{[1
]}

Teimouri, Abbas ^{[1
]}

Chermahini, Alireza Najafi ^{[1
]}

机构：

[1] Isfahan Univ Technol, Dept Chem, Esfahan 841543111, Iran

来源：

DYES AND PIGMENTS | 2007年 / 73卷 / 02期

关键词：

azo dyes; diazotization; diazo coupling; clays; green chemistry;

D O I：

10.1016/j.dyepig.2005.12.002

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Diazotization and diazo coupling reactions of sodium sulfanilate dihydrate and para-diazonium benzene sulfonyl azide with aromatic phenols over eco-friendly clay catalysts are described. These inexpensive, noncorrosive and reusable catalysts were found to exhibit bifunctional catalytic properties for diazotization and diazo coupling reactions. No considerable decreases in the efficiency of the catalysts were observed after four cycles of operation. The new method totally avoids the use of acids, alkalies and toxic solvents in diazotization and diazo coupling reactions. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：239 / 244

页数：6

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