Advertisement

Chemistry of Heterocyclic Compounds

, Volume 22, Issue 12, pp 1322–1326 | Cite as

Reactions of heterocyclic cations with n-containing nucleophiles. 15. Reaction of 2,6-diphenylpyrylium perchlorate with semi- and thiosemicarbazides

  • é. A. Zvezdina
  • M. P. Zhdanova
  • O. S. Anisimova
  • I. I. Nechayuk
Article

Abstract

The reaction of 2,6-diphenylpyrylium perchlorate with semi- and thiosemicarbazides in ethanol leads to 1-carbamoyl- and 1-thiocarbamoyl-3-phenyl-5-phenacyl-4,5-dihydropyrazoles, the cyclization of which yields 2,5-diphenyl-7-oxo(thio)-pyrazolo[1,5-c]pyrimidines. The tautomeric form of the latter is established by comparing their electronic absorption spectra with the spectra of the methyl derivatives.

Keywords

Methyl Organic Chemistry Absorption Spectrum Pyrimidine Perchlorate 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature Cited

  1. 1.
    é. A. Zvezdina, M. P. Zhdanova, and I. I. Giryavenko, Khim. Geterotsikl. Soedin., No. 7, 893 (1983).Google Scholar
  2. 2.
    é. A. Zvezdina, A. N. Popova, A. I. Pyshchev, and G. N. Dorofeenko, Khim. Geterotsikl. Soedin., No. 4, 461 (1982).Google Scholar
  3. 3.
    é. A. Zvezdina, M. P. Zhdanova, and G. N. Dorofeenko, Khim. Geterotsikl. Soedin., No. 3, 324 (1979).Google Scholar
  4. 4.
    A. T. Balaban, Tetrahedron, 24, 5059 (1968).Google Scholar
  5. 5.
    O. Buchardt, C. L. Pedersen, U. Svanholm, A. M. Duffield, and A. T. Balaban, Acta Chem. Scand., 23, 3125 (1969).Google Scholar
  6. 6.
    E. Kranz, J. Kurz, and W. Donner, Chem. Ber., 105, 388 (1972).Google Scholar
  7. 7.
    K. Takagi and M. Hubert-Habart, Bull. Soc. Chim. France, No. 3–4, 369 (1977).Google Scholar
  8. 8.
    K. Kazunori, H. Masaaki, and O. Toshihiko, Chem. Pharm. Bull., 22, No. 8, 1814 (1974).Google Scholar
  9. 9.
    H. V. Dobeneck and A. Uhe, Annalen, No. 10, 1550 (1974).Google Scholar
  10. 10.
    R. Madhow, Org. Prep. Proc., 8, 200 (1976).Google Scholar
  11. 11.
    é. A. Zvezdina, M. P. Zhdanova, O. S. Anisimova, and G. N. Dorofeenko, Khim. Geterotsikl Soedin., No. 5, 695 (1983).Google Scholar
  12. 12.
    P. Molina, A. Tarraga, and C. Serrano, Tetrahedron, 40, 4901 (1984).Google Scholar
  13. 13.
    A. R. Katritzky and A. T. Tarraga, Heterocycles, 18, 21 (1982).Google Scholar

Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • é. A. Zvezdina
    • 1
  • M. P. Zhdanova
    • 1
  • O. S. Anisimova
    • 1
  • I. I. Nechayuk
    • 1
  1. 1.Scientific-Research Institute of Physical and Organic ChemistryM. A. Suslov Rostov State UniversityRostov-on-Don

Personalised recommendations