Oxaziridine Are an Important Synthetic Motif Present Inmany Natural Products. Α-Hydroxyketones Have Been Synthesized In Many Ways,Including Reduction of Α-Diketones, Substitution of a Hydroxyl For a Leavinggroup and Direct Oxidation of an Enolate.Oxodiperoxymolybdenum(Pyridine)-(Hexamethylphosphoric Triamide) (Mooph) and N-Sulfonyloxaziridines Are the Mostcommon Electrophilic Sources of Oxygen Implemented In This Process. Oneadvantage of Using N-Sulfonyloxaziridinesis That Higher Chiral Induction Is Almost Invariably Observed Relative to Moophand Other Oxidants. High Yield (77-91%) and Dr (95:5 - 99:1) Are Reported For Α-Hydroxylation With Theevans' Chiral Auxiliary With N-Sulfonyloxaziridineas the Electrophile. Chiral Induction Has Been Demonstrated With Many Otherchiral Ketones and Ketones With Chiral Auxiliaries, Including Samp and Ramp.