The present paper illustrates the development of an advanced technique
in optical resolution. Both of the amphetamine enantiomers can be obt
ained by a two-step distillation in nearly quantitative yield without
any loss of the resolving agent. It is proved that the second-order in
teractions (H-bond) are sufficient for separation of enantiomers by di
stillation. (C) 1994 Wiley-Liss, Inc.