4,5-Diarylisoxazoles 1 are efficiently prepared by submitting enaminones 2, readily obtained from deoxybenzoins 3, to oximation conditions. This conversion implies an uncommon amine group exchange reaction. Preparation of 4-isoxazolines 5 and ring-opening transformations to β-keto nitriles 4 and 1,3-amino alcohol derivatives 7 are also described.
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Domı́nguez et al. (1996) studied this question.
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