SULFUR-CONTAINING SPIROCYCLIC COMPOUNDS BASED ON 3-METHYL(AMINO)-1-PHENYLPYRAZOL-5-ONES
DOI:
https://doi.org/10.1007/44Keywords:
spiro[(1-phenylpyrazol-5-one)-4-thiane], 1-phenylpyrazol-5-one, N-chlorosulfenylphthalimideAbstract
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.
Authors: Yu. G. Shermolovich and S. V. Emets.
English Translation in Chemistry of Heterocyclic Compounds, 2000, 36 (2), pp 152-156