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Unsymmetrical indolodimethylidynecyanines and their properties

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

New unsymmetrical dimethylidynecyanines with various substituants in the heterocyclic rings were obtained by condensation of 1-methyl-2-arylindoles that contain a formyl group in the 3 position with quaternary salts of 2-methyl-substituted benzoxazoles, benzothiazoles, 3,3-dimethylindolenines, and benzopselenazoles in acetic anhydride by heating in the presence of p-toluenesulfonic acid. Unsymmetrical dimethylidynecyanines with residues of substituted thiazoles were similarly synthesized. The spectral, polarographic, and photographic characteristics of the dyes obtained were studied. It is shown that, depending on their structure, they absorb in different zones of the spectrum and can be used for the spectral sensitization of direct positive recording materials to various parts of the spectrum.

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Literature cited

  1. J. D. Mee and D. W. Heseltine, US Patent No. 3501312; Ref. Zh. Khim., 11N658 (1971).

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Authors and Affiliations

  1. All-Union State Scientific-Research and Design Institute of the Photographic Chemical Industry, 125167, Moscow

    T. N. Galiullina, P. I. Abramenko & V. K. Kalent'ev

Authors
  1. T. N. Galiullina
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  2. P. I. Abramenko
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  3. V. K. Kalent'ev
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Additional information

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 930–934, July, 1982.

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Galiullina, T.N., Abramenko, P.I. & Kalent'ev, V.K. Unsymmetrical indolodimethylidynecyanines and their properties. Chem Heterocycl Compd 18, 707–710 (1982). https://doi.org/10.1007/BF00568947

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  • DOI: https://doi.org/10.1007/BF00568947

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