R. W. Sabnis, D. W. Rangnekar
1989
Citations
0
Influential Citations
35
Citations
Journal
Dyes and Pigments
Abstract
Abstract 2-Amino-4,5,6,7-tetrahydrobenzo[ b ]thiophene-3-carbonitrile and ethyl-2-amino-4,5,6,7-tetrahydrobenzo[ b ]thiophene-3-carboxylate were synthesised by reaction of cyclohexanone and sulphur with malononitrile and ethyl cyanoacetate respectively. These 2-aminothiophene derivatives were diazotised and coupled with a variety of coupling components to give azo dyes. The spectral properties of these dyes are reported. The dyes had generally good colouration and fastness properties on polyester.