THE AMINATION OF BROMANIL WITH 2,5-DIAMINOBENZENESULPHONIC ACID

Authors
HALLAS G WAREING AB RENFREW AHM TAYLOR JA
Citation
G. Hallas et al., THE AMINATION OF BROMANIL WITH 2,5-DIAMINOBENZENESULPHONIC ACID, Dyes and pigments, 24(3), 1994, pp. 241-248
Citations number
10
Categorie Soggetti
Chemistry Applied
Journal title
Dyes and pigments → ACNP
ISSN journal
01437208
Volume
24
Issue
3
Year of publication
1994
Pages
241 - 248
Database
ISI
SICI code
0143-7208(1994)24:3<241:TAOBW2>2.0.ZU;2-9
Abstract
The amination of bromanil with 2,5-diaminobenzenesulphonic acid at 60- degrees-C, unlike that of chloranil, leads to the total loss of haloge n. Reaction at 0-degrees-C, however, results in the formation of ino-3 -sulphoanilino)-3,6-dibromo-1,4-benzoquinone. This dianilide, unlike t he corresponding dichloro derivative, is readily reduced by warming it in aqueous solution with an excess of 2,5-diaminobenzenesulphonic aci d.