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
DOI:
https://doi.org/10.1007/8355Keywords:
pyrazol-5-ones, pyranopyrazol-6-ones, β-keto estersAbstract
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