Abstract
The reaction of 3-epoxypropionyl-2-pyrazolines and 3(5)-epoxypropionylpyrazoles with hydrazine hydrate leads to 4,5,4′,5′-tetrahydro- and -4,5-dihydro-3,3′-di-pyrazolyls, on the basis of which 4′,5′-dihydro-3,3′-dipyrazolyls and 3,3′-dipyrazolyls were subsequently obtained.
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I. G. Tishchenko, L. S. Stanishevskii, A. F. Kovaleva, and S. M. Osipova, Izv. Akad. Nauk Belorussk. SSR, Ser. Khim., No. 4, 86 (1970).
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A. M. Zvonok, N. M. Kuz'menok, and L. S. Stanishevskii, Khim. Geterotsikl. Soedin., No. 5, 679 (1982).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 226–229, February, 1984.
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Zvonok, A.M., Kuz'menok, N.M., Tishchenko, I.G. et al. Synthesis and some chemical transformations of 4′-aryl-4-hydroxy-4-methyl-4,5,4′,5′-tetrahydro- and 4,5-dihydro-3,3′-dipyrazolyls. Chem Heterocycl Compd 20, 185–188 (1984). https://doi.org/10.1007/BF00506290
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DOI: https://doi.org/10.1007/BF00506290