Tetrahedron Letters

Action de nucleophiles bifonctionnels sur un systeme γ-pyronique. Identification des produits reactionnels par RMN du 13 C.

JM Paris, JM Couquelet, MM Payard

Index: Paris, J. M.; Couquelet M. M.; Payard, M. M. Tetrahedron Letters, 1981 , vol. 22, # 17 p. 1591 - 1594

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Abstract

Résumé Among the various products formed by nucleophilic attack of hydrazine and hydroxylamine on oxo-2 furo [3, 4b] γ-pyrone, the major ones were pyrazole and isoxazole derivatives. Their structures, established by 13 C NMR spectra allowed us to propose a reaction mechanism.