Electrophilic substitution reactions in trispyrazolediyls, structure of tris(3-methyl-4-isopropyl-1,5-pyrazolediyl)

Abstract

Halogenation, nitration, and sulfonation of previously obtained tris(1,5-pyrazolediyls) proceeds at position 4 of the pyrazole nucleus with the formation of symmetrical tris(4-substituted 1,5-pyrazolediyls) in quantitative yield. However, only a monoformyltrispyrazolediyl is obtained in the Vilsmeier reaction. An X-ray structural investigation has been carried out on the trispyrazolediyl nucleus of compound (1c).

How to Cite
Nam, N. L.; Grandberg, I. I.; Shishkin, O. V. Chem. Heterocycl. Compd. 1996, 32, 789. [Khim. Geterotsikl. Soedin. 1996, 925.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01165722