SCHEDULED MAINTENANCE
Reaction with bases of 5-acyl-Δ2-isoxazolines gave nitriles, α-diketones, and Δ2-pyrrolin-4-ones. N.m.r. studies revealed that Δ2-pyrrolin-4-ones exhibited ring–chain tautomerism under a large range of solvent polarities. Possible mechanisms for this base-promoted reaction are suggested. N.m.r., i.r., and u.v. data are reported.
G. Bianchi, A. Gamba-Invernizzi and R. Gandolfi, J. Chem. Soc., Perkin Trans. 1, 1974, 1757 DOI: 10.1039/P19740001757
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