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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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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DOI: https://doi.org/10.1007/BF01165722