SALT-FREE SYNTHESIS OF AZO AND HYDRAZONE DYES UNDER CO2 PRESSURE

被引：14

作者：

RAUE, R ^{[1
]}

BRACK, A ^{[1
]}

LANGE, KH ^{[1
]}

机构：

[1] BAYER AG,W-5090 LEVERKUSEN,GERMANY

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH | 1991年 / 30卷 / 12期

关键词：

D O I：

10.1002/anie.199116431

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A large ecological advantage is evident in the synthesis of azo dyes according to Equation (a). The nitrous acid is released from its salts or esters by CO2 pressure, which reduces the quantity of salts produced as side products considerably. Heterocyclic amines can also be diazotized successfully in this one-step reaction and coupled quantitatively with tertiary aromatic amines (e.g., R1 = 3,4-diazapyrrol-2-yl, R2 = ethyl, R3 = benzyl).

引用

页码：1643 / 1644

页数：2