CONDENSATION OF PYRAZOL-5-ONES UNSUBSTITUTED IN THE POSITION 1 WITH β-KETO ESTERS. SYNTHESIS OF PYRANO[2,3-<i>c</i>]PYRAZOL-6-ONES

Authors

  • Н. Л. Нам K. A. Timiryazev Agricultural Academy, Moscow 127550
  • И. И. Грандберг K. A. Timiryazev Agricultural Academy, Moscow 127550

DOI:

https://doi.org/10.1007/8355

Keywords:

pyrazol-5-ones, pyranopyrazol-6-ones, β-keto esters

Abstract

The thermal condensation  of  β-keto esters and N-unsubstituted pyrazol-5-ones gives good yields of pyrano[2,3-c]pyrazol-6-ones. Other potential  routes for the condensation are not realized. The β-diketones react via another scheme to form noncyclic reaction products.

Статья в английском издании журнала: DOI

How to Cite
Nam, N. L.; Grandberg, I. I. Chem. Heterocycl. Compd. 2005, 41, 387. [Khim. Geterotsikl. Soedin. 2005, 444.]

For this article in the English edition, see DOI 10.1007/s10593-005-0159-7

 

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Published

2023-11-29

Issue

No. 3 (2005)

Section

Original Papers