N-Boc protected α-aminoketones ( 4 ) of moderate enantiomeric purity were synthesised via N-Boc-3-(4-cyanophenyl)-oxaziridine ( 5 ) mediated electrophilic amination of enantiopure α-silyl ketones ( 2 ) followed by removal of the silyl directing group in the aminated products ( 3 ) with tetrabutylammonium fluoride in a buffer solution.