Abstract
3-Methyl(amino)-1-phenylpyrazol-5-ones react with N-chlorosulfenylphthalimide to give 4-phthalimidothiopyrazoles which decompose to form 3-methyl(amino)-1-phenylpyrazol-5-one-4-thiones. They were identified as their spirocyclic adducts with dienes. Oxidation of the latter with m-chloroperbenzoic acid gives spirocyclic sulfoxides and sulfones.
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References
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Additional information
Institute of Organic Chemistry, Ukraine Academy of Sciences, Kiev 253660. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 187–192, February, 2000.
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Shermolovich, Y.G., Emets, S.V. Sulfur-containing spirocyclic compounds based on 3-methyl-(amino)-1-phenylpyrazol-5-ones. Chem Heterocycl Compd 36, 152–156 (2000). https://doi.org/10.1007/BF02283543
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DOI: https://doi.org/10.1007/BF02283543