methyl cyclohexanecarboxylate with 1,4-dibromobutane followed by conversion of the methyl ester to an oxime. Spironitrone 5 undergoes facile 1,3-dipolar cycloaddition to a range of olefins to form a range of spirocyclic isoxazolidines. Nucleophilicaddition of several Grignard reagents to spironitrone 5 provided access to a series of alkyl-substituted spirohydroxylamines.