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Novel substituted 2‐acetamido thiophene‐4‐styryl disperse dyes
Author(s) -
Rangnekar Dinesh W.,
Sabnis Ram W.
Publication year - 1993
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280560412
Subject(s) - thiophene , malononitrile , dyeing , chemistry , piperidine , acetic acid , yield (engineering) , organic chemistry , polyester , derivative (finance) , aryl , sulfur , polymer chemistry , materials science , catalysis , alkyl , economics , financial economics , metallurgy
Ethyl 2‐acetamido‐3‐cyano‐5‐carbethoxy thiophene‐4‐acetic acid ester has been synthesised by the Gewald reaction of diethyl acetonedicarboxylate, sulphur and malononitrile, followed by acetylation. A variety of aryl and hetaryl aldehydes were condensed with this thiophene derivative in refluxing DMF in the presence of piperidine to yield novel styryl dyes. The fluorescence in solution and dyeing properties of these styryl dyes on polyester were studied.