A series of novel polyfunctionalized acyclic and heterocyclic dye precursors andtheir respective azo (hydrazone) counterpart dyes and dye precursors based on conjugateenaminones and/or enaminonitrile moieties were synthesized. The dyes and their precursorsare based on 2-cyano-N-(3-cyano-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)-acetamide,2-ethoxycarbonyl-N-(3-cyano-4,5,6,7-tetrahydrobenzo[b]thiophen-2-yl)
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