Substituted dibenzoylmethanes react with hydroxylamine hydrochloride to give 3-aryl-5-phenylisoxazoles and/or 5-aryl-3-phenylisoxazoles depending on the nature of the substituent in the diketone. Some structures previously assigned to isoxazoles from these reactions have been shown to be incorrect.
J. Larkin, M. G. Murray and D. C. Nonhebel, J. Chem. Soc. C, 1970, 947 DOI: 10.1039/J39700000947
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