Abstract The reactions of 1, 2-dichloroethane with 2-(ethylamino) ethanol or diethylamine have been investigated in several solvents from 51 to 80 C. A reaction mechanism has been proposed where 1, 2-dichloroethane reacts with the secondary amines in both bimolecular substitution (SN 2) and elimination (E2) reactions; the substitution product is rapidly converted in an aziridinium ion and undergoes a consecutive reaction with the starting ...