Results Successful CXZ transfer to a CK bond via PhHgCXa reagents to give an aziridine is possible when the nucleophilic character of the nitrogen atom has been significantly decreased. 8 Thus, compounds of type RN= CC12 could be converted to C- perchloroaziridines in good yield by reaction with phenyl (bromodichloromethyl)-mercury, but imines of type RN= CHR'and RN= CR'Z appeared to react with these mercury ...