This video describes the general introduction of aziridine. The structure, polarity and ring strain in aziridine has been discussed in this video. The polarity and baisicity of aziridine is compared with oxirane. The preparation of aziridine has been discussed in this video. The beta substituted amines are converted into aziridine. The activation of –OH group by various methods including Mitsunobu reagent has been well explored in this video. The ring transformation of oxirane into aziridine is part of this video. The synthesis of nitrene and its conversion into aziridine has been given in this video.