Abstract
1,5-Tripyrazolylenes were prepared with satisfactory yields by the reaction of 5-pyrazolones unsubstituted at the nitrogen atom with an equimolar amount of POCl3 in open vessels together with 5-chloro derivatives (Michaelis reaction).
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Additional information
K. A. Timiryazev Agricultural Academy, Moscow 127550. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 616–620, May, 1994. Original article submitted January 10, 1994.
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Grandberg, I.I., Nam, N.L. New type of condensation of 5-pyrazolones unsubstituted at the nitrogen. Chem Heterocycl Compd 30, 540–543 (1994). https://doi.org/10.1007/BF01169829
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DOI: https://doi.org/10.1007/BF01169829