SYNTHESIS OF 1-ARYL(HETARYL)PYRAZOL-5-OLS AND AZOPYRAZOLES ON THEIR BASIS

Authors

  • Д. Н. Кузнецов A. N. Kosygin State Textile University
  • А. Г. Ручкина A. N. Kosygin State Textile University
  • К. И. Кобраков A. N. Kosygin State Textile University

DOI:

https://doi.org/10.1007/2070

Keywords:

azopyrazoles, acetoacetic ester, hydrazones, 3, 5-dichloropyrid-2-ylhydrazine, mono- and dinitrophenylhydrazine, pyrazol-5-ols, biological activity, coloration

Abstract

Treatment of 3,5-dichloropyrid-2-ylhydrazine, and of mono- and dinitrophenylhydrazines with acetoacetic ester gave hydrazones and the products of their cyclization, namely pyrazolols. It was shown that acetoacetic ester 2,4-dinitrophenylhydrazone cyclizes to the pyrazolol only by using PPA while other studied hydrazones undergo tarring under these conditions. The products of azocoupling of pyrazolols with 3-diazonio-4-hydroxy-5-nitrobenzenesulfonate or 2-hydroxy-5-nitrophenyldiazonium salts are able to color textile materials. The fungicidal activity of the synthesized compounds has been studied.

How to Cite
Kuznetsov, D. N.; Ruchkina, A. G.; Kobrakov, K. I. Chem. Heterocycl. Compd. 2011, 47(4), 441. [Khim. Geterotsikl. Soedin. 2011, 539.]

For this article in the English edition see DOI 10.1007/s10593-011-0778-0

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Published

2014-11-27

Issue

No. 4 (2011)

Section

Original Papers