 The synthesis of aziridines from <unk> is another important application of the Johnson – Corey – Chaykovsky reaction and provides an alternative to amine transfer from <unk> . Though less widely applied , the reaction has a similar substrate scope and functional group tolerance to the <unk> equivalent . The examples shown below are representative ; in the latter , an <unk> forms in situ and is opened via nucleophilic attack to form the corresponding amine . 
