Synthesis and Application of Some Bisazo Acid Dyes Based on 4-Hydroxy quinoline Quinazoline System on Various Fabric

Abstract

Fifteen 3-(4' -R-azo-1 '-phenylazo )-4-hydroxy quinolino-[1,2-b]-
4-oxoquinazolines (IVa-o) were prepared by coupling diazotised
3-(4' -amino-1' -phenylazo )-4-hydroxy quinolino-[ 1,2-b ]-4-oxoquinazoline
(III) with various coupling components (a-o). The compound
(I) was coupled with diazotised p-arninoacetanilide giving
compound II, which on hydrolysis gave compound III. The compounds
IVa-o were characterised by elemental and spectral
analyses and their dyeing performance on silk, wool and nylon
fabrics was assessed.