Oxaziridines are intermediates in the peroxide process for the production of hydrazine. Many millions of kilograms of hydrazine are produced annually by this method that involves a step wherein ammonia is oxidized in the presence of methyl ethyl ketone to give the oxaziridine:
:Me(Et)C=O + NH + HO → Me(Et)CONH + HO
In subsequent steps the oxaziridine is converted to the hydrazone, which is the immediate in the way to hydrazine:
:Me(Et)CONH + NH → Me(Et)C=NNH + HO