β-Fluoro amides were obtained from the reactions of activated aziridines with partially hydrated nickel difluoride (NiF 2 nH 2 O, n <4) in good yields (47-82%) in the presence of tetran-butylammonium fluoride (20 mol%), while the non-activated aziridines did not react under the same conditions.

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Treatment of activated aziridines with partially hydrated nickel difluoride (obtained by treating NiF2.4H2O in vacuum at 120°C) in the presence of tetra‐butylammonium fluoride leads to formation of β‐fluoro amides in moderate to good yield.

Tri-n-butylphosphane Catalyzed Ring Opening of Aziridines with Secondary Amines. -The regioselective ring-opening of aziridines with secondary alkyl amines affords the corresponding vicinal diamines. Aromatic secondary amines do not react. -(ZHANG*, W. X.; SU, L.; HU, W. G.; ZHOU, J.; Chin. Chem. Lett. 23 (2012) 6, 657-660, http://dx.