Abstract
The coexistence in solution of tautomeric isoxazoline and pyrazoline forms of 1,3-alkanoylhydrazonoximes of acetylacetone has been detected and investigated by1H and13C NMR spectroscopic methods. The compounds indicated eliminate hydroxylamine under the action of acid catalysts, forming 1-acyl-3,5-dimethylpyrazoles.
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Institute of High Molecular Compounds, Russian Academy of Sciences, St. Petersburg 199004, Russia
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 825–829, June, 2000.
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Ershov, A.Y., Dobrodumov, A.V. Ring-ring tautomerism in 1,3-alkanoylhydrazonoximes of acetylacetone. Chem Heterocycl Compd 36, 722–727 (2000). https://doi.org/10.1007/BF02297682
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DOI: https://doi.org/10.1007/BF02297682