Abstract
Abstract The alternating transposition of C-3 and C-5 substituents on 3,5-disubstituted isoxazoles was found by refluxing a mixture of hydroxylamine hydrochloride, potassium carbonate, and 3,5-disubstituted 2-methylisoxazolium salts, derived from the corresponding isoxazoles. Under the same conditions, 3,5-disubstituted 2-t-butyl- or 2-benzhydrylisoxazolium salts gave the corresponding isoxazoles without alternation of the substituents.
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