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Pyrolocyanines. 17. Symmetrical flavylocyanines based on methoxy-substituted 4-methylflavylium salts

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

Symmetrical flavylocyanines in which electron-donor substituents (methoxy groups) are present alternately in the 5, 6, 7, 8, 2′, 3′, and 4′ positions of the flavylium rings were synthesized. The characteristics of the long-wave absorption bands of the resulting flavylocyanines are discussed with the aid of quantum-chemical methods. It is shown that not only the position but also the form of their absorption bands can be changed purposefully by introduction of substituents in the heteroresidues of symmetrical polymethine dyes.

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Authors and Affiliations

  1. Institute of Organic Chemistry, Academy of Sciences of the Ukrainian SSR, 252660, Kiev

    I. M. Gavrilyuk, A. A. Ishchenko, M. A. Kudinova & A. I. Tolmachev

Authors
  1. I. M. Gavrilyuk
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  2. A. A. Ishchenko
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  3. M. A. Kudinova
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  4. A. I. Tolmachev
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Additional information

See [1] for communication 16.

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 304–308, March, 1983.

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Gavrilyuk, I.M., Ishchenko, A.A., Kudinova, M.A. et al. Pyrolocyanines. 17. Symmetrical flavylocyanines based on methoxy-substituted 4-methylflavylium salts. Chem Heterocycl Compd 19, 243–247 (1983). https://doi.org/10.1007/BF00513252

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  • DOI: https://doi.org/10.1007/BF00513252

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