2,3-Bifunctionalized Aziridines: Regioselective MgBr2-Mediated Opening Under Chelation Controlled Conditions

The results obtained in the MgBr2-mediated opening of 2,3-bifunctionalised aziridines are reported. The study shows that, at least for the Z stereoisomers, the bromide attacks the aziridine ring in the a position to all functional groups considered with high regioselectivity, thus suggesting a strong aptitude for MgBr2 to coordinate a benzyloxy function.