Stereochemistry of the Oxidation of Imines Derived from Substituted Cyclohexanones: Axial vs Equatorial Attack and Evidence for Delivery by an Adjacent Hydroxyl Group
A set of conformationally biased iminesderivedfrom substituted cyclohexanones and benzylamine or diphenylmethylamine, respectively, were oxidized to the corresponding oxaziridines. The structures of the oxaziridines were determined via NMR comparison of two series of differently N-substituted oxaziridines. Thus, those compounds having an axially disposed nitrogen substituent displayed an upfield-shifted