Abstract
Polymethine dyes that are 4-substituted furo[2, 3-b]pyridine and selenopheno-[2, 3-b] pyridine derivatives were synthesized. It was shown that replacement of the vinylene group in the benzene ring of a 4-quinoline heteroresidue in the cyanine dyes by an oxygen or selenium atom causes a greater hypsochromic shift in their absorption maxima than replacement by a sulfur atom.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 56–60, January, 1976.
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Abramenko, P.I., Zhiryakov, V.G. & Ponomareva, T.K. Polymethine dyes - 4-substituted furo [2,3-b]- and selenopheno[2,3-b]pyridine derivatives. Chem Heterocycl Compd 12, 52–56 (1976). https://doi.org/10.1007/BF00473913
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DOI: https://doi.org/10.1007/BF00473913