The asymmetric synthesis of γ-amino nitriles 4a - c and γ-amino ketones 5d - f is described. Key step of the procedure is the diastereoselective β-aminoethylation of metalated SAMP-/RAMP-hydrazones 1a - f with tosylaziridine 2. Cleavage of the chiral auxiliary with MMPP leads to γ-amino nitriles 4a - c in good yields and excellent enantiomeric excesses (ee ≥ 98%). Likewise γ-amino ketones 5d - f (ee ≥ 98%) were obtained in good overall yields by cleavage of the hydrazones 3d - f with aqueous copper(II) chloride solution.