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Heterocyclic analogs of xanthone

IV. Physicochemical properties of 9-oxochromeno-[3,2-d]pyrazoles, 9-oxothiochromeno[3,2-d]pyrazoles, and 8-oxodipyrazolopyrans

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Abstract

A comparative investigation of the acid-base properties, the polarographic behavior, and the spectral characteristics of oxochromeno- and oxothiochromenopyrazoles, oxodipyrazolopyrans, and their electronic analogs xanthone and thioxanthone, has been performed. The difference in properties is due to the electron-accepting nature of the condensed pyrazole ring.

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Authors and Affiliations

  1. Lensovet Leningrad Technological Institute, USSR

    A. S. Vitvitskaya, M. P. Noskova, I. Ya. Kvitko & L. S. Éfros

Authors
  1. A. S. Vitvitskaya
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  2. M. P. Noskova
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  3. I. Ya. Kvitko
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  4. L. S. Éfros
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Additional information

For communication III, see [8].

Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 990–992, July, 1973.

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Vitvitskaya, A.S., Noskova, M.P., Kvitko, I.Y. et al. Heterocyclic analogs of xanthone. Chem Heterocycl Compd 9, 911–913 (1973). https://doi.org/10.1007/BF00471581

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  • DOI: https://doi.org/10.1007/BF00471581

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