[3+2] Cross-Coupling Reactions of Aziridines with Isocyanates Catalyzed by Nickel(II) Iodide

Cycloaddition of aziridines with isocyanates proceeded smoothly in the presence of a nickel catalyst, and five iminooxazolidine derivatives
were isolated in good yields. The best result was obtained when the reaction was carried out in the presence of NiI2, and a longer reaction
time allowed the isomerization of the iminooxazolidine to the corresponding imidazolidinone derivatives.