Abstract
Oximes possessing γ- and δ-alkenyl substituents are cyclised by N-bromo- or N-iodosuccinimide, iodine or ICl to the corresponding cyclic nitrones or their dimeric H-bonded hydroiodide salts in good yield; facially specific cycloaddition of these nitrones, and others derived by cyclisation of δ,δ-bis(alkenyl) ketoximes or by iodine induced addition of acetaldoxime to cyclohexene, furnish isoxazolidines.
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