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http://nopr.niscair.res.in/handle/123456789/32551| Title: | Synthesis of 2-(aryl/hetaryl)azo-3,4-dihydroxy-5-( 4-nitrophenyl)- thiophene-1, 1-dioxide derivatives and their dyeing properties |
| Authors: | Mavlankar, S V Rangnekar, D W |
| Keywords: | 2-(Aryl/hetaryl)azothiophene-1, 1-dioxide derivatives;Azo disperse dyes;Dyeing;Polyester fibre |
| Issue Date: | Dec-1991 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Preparation of 2-(aryl/hetaryl)azothiophene derivatives (VIa-g) was achieved by coupling 3,4-dihydroxy-5-(4-nitrophenyl)-thiophene-1, 1-dioxide-2-carboxylic acid (III) with diazonium salts (Va-g) derived from aryl and hetaryl amines (IVa-g).The intermediate III was obtained in excellent yield by the condensation of diethyl oxalate and 4-nitrobenzylsulphonyl acetic acid in a single step. These compounds when applied on polyester fibres as disperse dyes gave yellow to red-violet shades with good pick-up, moderate light fastness and good sublimation fastness. |
| Page(s): | 282-284 |
| URI: | http://hdl.handle.net/123456789/32551 |
| ISSN: | 0975-1025 (Online); 0971-0426 (Print) |
| Appears in Collections: | IJFTR Vol.16(4) [December 1991] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJFTR 16(4) 282-284.pdf | 665.35 kB | Adobe PDF | View/Open |
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