Synthesis and Dyeing Performance of Disperse Dyes Based on 4-Hydroxy-1-Methyl-Quinoline-2(1H)-One System

摘要

4-Hydroxy-1-methyl-quinolin-2(1H)-one (III) used as a coupling component,was prepared by the methylation of anthranilic acid giving N-methylanthranilic acid (I) followed by acetylation giving N-methyl-N-acetyl anthranilic acid (II) and ring closure. Twenty 3-arylazo-4-hydroxy-1-methyl-quinolin-2(1H)-ones disperse dyes (V_(a-t)) were prepared by coupling(III) with various diazo components (IV_(a-t)). The compounds V_(a-t)) are characterized by elemental and spectral analyses and their dyeing performance on polyester fibre was assessed. These compounds gave yellow,orange,brown and red shades with poor to good light-fastness,very good to excellent wash fastness and poor to excellent exhaustion.