3-(1, 1-Dialkyl-2-hydroxyethyl)-5-hydroxyamino-5-triflouromethyl-Δ2-isoxazolines: The first representatives of β-dioximes existing in the cyclic form: The first representatives of β-dioximes existing in the cyclic form
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It was demonstrated by X-ray diffraction analysis that the reaction of 3,3-dimethyl-6-trifluoromethyl-2,3-dihydro-4-pyrone with hydroxylamine afforded 5-hydroxyamino-3-(2-hydroxy-1,1-dimethylethyl)-5-trifluoromethyl-Δ2-isoxaline.