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Pyrylocyanines

IV. Symmetrical 2,6-diphenylthio- and 2,6-diphenylselenopyrylocyanines

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

From 4-methyl-2,6-diphenylthiopyrylium and 4-methyl-2,6-diphenylselenopyrylium salts thio- and selenopyrylocyanines with symmetrical structures have been synthesized. In the series of dyes synthesized, greater values of the vinylidene shifts of the absorption maxima are observed than in the series of their thio- and selenoflavylium analogs. The mono-, tri-, and penta-methinecyanines obtained are more highly colored than the analogous thio- and selenoflavylo-cyanines and, conversely, the 2,6-diphenylselenopyryloheptamethinecyanines are colored less deeply than the selenoflavylotricarbocyanines. The structure of the product of the oxidation of 4-methyl-2,6-diphenylpyrylium perchlorate has been established.

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Authors and Affiliations

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

    A. I. Tolmachev & M. A. Kudinova

Authors
  1. A. I. Tolmachev
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  2. M. A. Kudinova
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Additional information

For Communication III, see [1].

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 49–52, January, 1974.

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Tolmachev, A.I., Kudinova, M.A. Pyrylocyanines. Chem Heterocycl Compd 10, 41–44 (1974). https://doi.org/10.1007/BF00475905

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  • DOI: https://doi.org/10.1007/BF00475905

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