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

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Chemistry of Heterocyclic Compounds Aims and scope

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).

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Authors
  1. N. L. Nam
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  2. I. I. Grandberg
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  3. O. V. Shishkin
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Additional information

Moscow K. A. Timiryazev Academy of Agriculture, Moscow 127550. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 925–931, July, 1996. Original article submitted March 20, 1996.

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Nam, N.L., Grandberg, I.I. & Shishkin, O.V. Electrophilic substitution reactions in trispyrazolediyls, structure of tris(3-methyl-4-isopropyl-1,5-pyrazolediyl). Chem Heterocycl Compd 32, 789–795 (1996). https://doi.org/10.1007/BF01165722

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