SYNTHESIS OF DERIVATIVES OF PYRAZOLIN-1H-3-ONES FROM 2'-N-SUBSTITUTED MONOHYDRAZIDES OF CYCLOHEXENEDICARBOXYLIC ACIDS

Authors

  • Д. Зицане Riga Technical University, Riga LV-1048
  • И. Равиня Riga Technical University, Riga LV-1048
  • З. Тетере Riga Technical University, Riga LV-1048
  • М. Петрова Riga Technical University, Riga LV-1048

DOI:

https://doi.org/10.1007/8241

Keywords:

hydrazide, ethoxymethylenemalonic acid diethyl ester, pyrazoline, pyrazolin-5-one, cyclohexenecarboxylic acid

Abstract

2-(6-Aryl-4-methylcyclohex-3-enecarbonyl)-4-ethoxycarbonylpyrazolin-1H-3-ones have been synthesized from 2'-N-(2,2-diethoxycarbonylvinyl)monohydrazides of 6-aryl-4-methylcyclohex-3-ene-1,1-dicarboxylic acids by boiling in DMF, pyridine, or toluene in the presence of potassium carbonate. Under analogous conditions, but without potassium carbonate, 2'-N-substituted hydrazides of cyclohexenecarboxylic acids are obtained.

How to Cite
Zicane, D.; Ravina, I.; Tetere, Z.; Petrova, M.  Chem. Heterocycl. Compd. 2005, 41, 850. [Khim. Geterotsikl. Soedin. 2005, 1007.]

For this article in the English edition, see DOI 10.1007/s10593-005-0237-x


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Published

2023-10-31

Issue

No. 7 (2005)

Section

Original Papers