Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/32452
Title: Synthesis of 2-methyl-6-(aryl/hetaryl-azo)thiazolo[4,5- b]quinoxalines and 7-( aryl-/hetaryl-azo)[ 1,4 ]dioxino[ 2,3-b]quinoxalines and their dyeing performance on polyester fibres
Authors: Rangnekar, D W
Sabnis, R W
Keywords: Azo disperse dyes;Dyeing;Polyester fibre;Thiazolo[4,5-b]quinoxalines;[1,4]Dioxino-[2,3-b]quinoxalines
Issue Date: Jun-1993
Publisher: NISCAIR-CSIR, India
Abstract: 6-Amino-2 -methylthiazolo[4,5-b ]quinoxaline (lVa) and 7- amino[1 ,4] dioxino[2,3-b] quinoxaline (lVb), obtained by the cyclocondensation of 2,3-dichloro-6-nitroquinoxaline (I) with thioacetamide (IIa) and 1,2-ethanediol (IIb) respectively and subsequent reduction of resulting nitroderivatives (III), were diazotized and coupled with suitable hydroxy heterocyclic couplers (VIa-d) and N,N-dialkyl substituted arylamines (VIe-g) to give 2-methyl-6-(aryl-/hetaryl-azo)thiazolo[4,5-b]quinoxalines (VIIa-g) and 7-(aryl-/hetaryl-azo) [1,4]dioxino[2,3-b]quinoxalines (VIIIa-g) respectively. The compounds VIIa-g and VIIIa-g when applied on polyester fibres as disperse dyes gave yellow to red violet shades with good pick-up, moderate to very good light fastness and good to excellent sublimation fastness.
Page(s): 97-100
URI: http://hdl.handle.net/123456789/32452
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Appears in Collections:IJFTR Vol.18(2) [June 1993]

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