5-HYDROXY-2-PYRAZOLINES AND SOME OF THEIR 1-SUBSTITUTED ANALOGS

Authors

  • К. Н. Зеленин Military Medical Academy, St. Petersburg, Russia 194044
  • А. Р. Тугушева Military Medical Academy, St. Petersburg, Russia 194044
  • С. И. Якимович St. Petersburg State University, St. Petersburg 199004
  • В. В. Алексеев Military Medical Academy, St. Petersburg, Russia 194044
  • И. В. Зерова St. Petersburg State University, St. Petersburg 199004

Keywords:

1,3-dicarbonyl compounds, hydrazines, hydrazones, 5-hydroxypyrazolines, pyrazoles

Abstract

The use of 1,3-dicarbonyl compounds containing strong electron-withdrawing substituents (perfluoroalkyl, 4-nitrophenyl) at one of the carbonyl groups in reaction with hydrazine or its monosubstituted derivatives (4-nitro- and 2,4-dinitrophenylhydrazines) leads to the formation of stable intermediates for the synthesis of pyrazoles (5-hydroxy-2-pyrazolines) or their linear tautomers (hydrazones).

How to Cite
Zelenin, K. N.; Tugusheva, A. R.; Yakimovich, S. I.; Alekseev, V. V.; Zerova, E. V. Chem. Heterocycl. Compd. 2002, 38, 668. [Khim. Geterotsikl. Soedin. 2002, 762.]

For this article in the English edition, see DOI https://doi.org/10.1023/A:1019909117505

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Published

2002-06-25

Issue

No. 6 (2002)

Section

Original Papers