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Pyrylocyanines. 33. Pyrylocarbocyanines with bridge groups in the chromophore

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

Salts of 4,4-tetra-, penta-, and hexamethylene-bis-(2,6-diphenylpyrylium) and -thiopyrylium were synthesized and used as the basis for producing trimethylcyanines with ethylene, tri- and tetramethylene bridge groups in the chromophore. Factors influencing the color of these dyes were analyzed. The bis-pyrylium salts were converted to derivatives of pyridine, N-methyl- and N-phenylpyridinium. The structure of the compounds obtained was confirmed by the data of electron spectroscopy and PMR spectroscopy.

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Authors
  1. M. A. Kudinova
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  2. E. I. Maiboroda
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  3. Yu. L. Slominskii
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  4. A. I. Tolmachev
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Additional information

For communication 32, see [1].

Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev 252660. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1186–1190, September, 1994. Original article submitted July 13, 1994.

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Kudinova, M.A., Maiboroda, E.I., Slominskii, Y.L. et al. Pyrylocyanines. 33. Pyrylocarbocyanines with bridge groups in the chromophore. Chem Heterocycl Compd 30, 1024–1028 (1994). https://doi.org/10.1007/BF01171156

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