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Carbocyanine dyes with an o-hydroxyaryl substituent in the meso position of the polymethine chain

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Chemistry of Heterocyclic Compounds Aims and scope

Abstract

Carbocyanine dyes with an o-hydroxyaryl substituent in the meso position of the polymethine chain were obtained from o-hydroxybenzoyl derivatives of the Fischer base and heterocyclic methylene bases (1,3,3-trimethyl-2-methyleneindoline, 1-ethyl-4-methylene-1,4-dihydroquinoline, and 1-methyl-2-methylene-1,2-dihydroquinoline) in the presence of phosphorus oxychloride. The symmetrical indolenine dyes exist in the colorless spiropyran form in an alkaline medium. The unsymmetrical carbocyanines with a quinoline fragment do not form a spiro form and are deeply colored compounds; this is explained by their open dipolar structure.

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Authors and Affiliations

  1. D. I. Mendeleev Moscow Institute of Chemical Technology, 125047, Moscow

    N. M. Przhiyalgovskaya, L. I. Kon'kov, I. I. Boiko & L. N. Kurkovskaya

Authors
  1. N. M. Przhiyalgovskaya
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  2. L. I. Kon'kov
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  3. I. I. Boiko
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  4. L. N. Kurkovskaya
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Additional information

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 100–103, January, 1988.

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Przhiyalgovskaya, N.M., Kon'kov, L.I., Boiko, I.I. et al. Carbocyanine dyes with an o-hydroxyaryl substituent in the meso position of the polymethine chain. Chem Heterocycl Compd 24, 83–86 (1988). https://doi.org/10.1007/BF00475576

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  • DOI: https://doi.org/10.1007/BF00475576

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