Abstract
Some new polymethine dyes of the cyanine and merocyanine series which are derivatives of 5- and 6- thienopyridines are synthesized. Replacement of a vinyl group at a sulfur atom in the condensed benzene ring of quinoline in dyes which are derivatives of this base, always leads to a bathochromic shift of the absorption maximum of the corresponding dyes.
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Zhiryakov, V.G., Abramenko, P.I. Polymethylene dyes derived from heterocyclic bases containing condensed thiophene rings. Chem Heterocycl Compd 3, 501–504 (1967). https://doi.org/10.1007/BF00481583
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DOI: https://doi.org/10.1007/BF00481583