SYNTHESIS OF DERIVATIVES OF 3,5-DIOXOPYRAZOLIDINE

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/10.1007/8370

Keywords:

hydrazides of cyclohexenedicarboxylic acids, 3, 5-dioxopyrazolidines, diethyl ester of ethoxymethylenemalonic acid, 5-oxopyrazolines

Abstract

The reaction of monohydrazides of 2-R-4-methylcyclohex-4-ene-1,1-dicarboxylic acids with ethoxymethylenemalonic  acid diethyl ester leads to N-(2,2-diethoxycarbonylethylenyl)hydrazides of 2-R-4-methylcyclohex-4-ene-1,1-dicarboxylic acids, which are acylated by the anhydrides  of trifluoroacetic and acetic acids with the formation  of  derivatives of 3,5-dioxopyrazolidine and 5-oxopyrazoline respectively.

How to Cite
Zicane, D.; Ravina, I.; Tetere, Z.; Petrova, M. Chem. Heterocycl. Compd. 2005, 41, 187. [Khim. Geterotsikl. Soedin. 2005, 216.]

For this article in the English edition, see DOI 10.1007/s10593-005-0125-4

 

Downloads

Published

2023-11-30

Issue

No. 2 (2005)

Section

Original Papers