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Chemistry of Heterocyclic Compounds

, Volume 9, Issue 7, pp 911–913 | Cite as

Heterocyclic analogs of xanthone

IV. Physicochemical properties of 9-oxochromeno-[3,2-d]pyrazoles, 9-oxothiochromeno[3,2-d]pyrazoles, and 8-oxodipyrazolopyrans
  • A. S. Vitvitskaya
  • M. P. Noskova
  • I. Ya. Kvitko
  • L. S. Éfros
Article

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.

Keywords

Organic Chemistry Spectral Characteristic Pyrazole Xanthone Comparative Investigation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

  1. 1.
    A. S. Sarenko, L. S. Éfros, and I. Ya. Kvitko, Zh. Fiz. Khim., No. 9, 23 (1970).Google Scholar
  2. 2.
    A. S. Sarenko, L. S. Éfros, and I. Ya. Kvitko, Khim. Geterotsikl. Soedin., 799 (1972).Google Scholar
  3. 3.
    D. Cook, Can. J. Chem., 39, 1184 (1961).Google Scholar
  4. 4.
    D. Cook, Can. J. Chem., 41, 505 (1963).Google Scholar
  5. 5.
    A. I. Tolmachev, L. M. Shulezhko, and A. A. Kisilenko, Zh. Obshch. Khim., 37, 367 (1967).Google Scholar
  6. 6.
    I. I. Grandberg, Author's Abstract of Doctoral Disseration [in Russian], Moscow (1963).Google Scholar
  7. 7.
    Yu. N. Koshelev, I. Ya. Kvitko, and L. S. Éfros, Zh. Organ. Khim., 8, 1750 (1972).Google Scholar
  8. 8.
    A. S. Sarenko, L. I. Poznyakova, I. Ya. Kvitko, and L. S. Éfros, Khim. Geterotsikl. Soedin., 805 (1972).Google Scholar

Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • A. S. Vitvitskaya
    • 1
  • M. P. Noskova
    • 1
  • I. Ya. Kvitko
    • 1
  • L. S. Éfros
    • 1
  1. 1.Lensovet Leningrad Technological InstituteUSSR

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