Derivatives of 1-(2-pyridyl)-4,5,6,7-tetrahydroindazole

Abstract

In reaction of oxidation of 1-(2-pyridyl)-3,6,6-trimethyl-4-oxo-4,5,6,7-tetrahydroindazole, the corresponding 4,5-dioxoindazole is obtained, and then 1-(2-pyridyl)-3-methyl-4-carboxy-5-(2-methyl-2-carboxypropyl)pyrazole; in bromination reaction, a series of 5-bromo and 7-bromo derivatives is obtained. From 4,5-dioxoindazole with hydrazides of acids, a series of 4-oxo-5-acylhydrazono derivatives is obtained, and also 1-(2-pyridyl)-3,6,6-trimethyl-4-oxo-5-tosylhydroindazole, which, under the action of caustic, gives the 4-oxo-5-diazo derivative.

How to Cite
Strakova, I. A.; Strakov, A. Ya.; Petrova, M. V. Chem. Heterocycl. Compd. 1995, 31, 303. [Khim. Geterotsikl. Soedin. 1995, 351.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01373547