Synthesis of 3-aryl-5-methylpyrrolidino[1,2-<i>b</i>]pyrazoles

Abstract

The sequential conversion of 5-hydroxy-5-methyl-4-oxo-3-arylpyrrolidino[1,2-b]pyrazoles to 5-methyl-5-chloro-4-oxo-, 4-hydroxy-5-methyl-5-chloro-, and 5-methyl-4-oxo-3-arylpyrrolidino[1,2-b]pyrazoles and the Huang‒Minlon reduction of the last afforded 3-aryl-5-methylpyrrolidino[1,2-b]pyrazoles.

How to Cite
Kuz'menok, N. M.; Zvonok, A. M. Chem. Heterocycl. Compd. 1994, 30, 44. [Khim. Geterotsikl. Soedin. 1994, 49.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01164730