1,2-Aminothioethers Derived from Ephedrine and Pseudoephedrine: Heterobidentate Ligands for the Palladium-Catalysed Asymmetric Allylic Substitution Reaction - Page, Philip C Bulman; Heaney, Harry; Reignier, Serge; Rassias, Gerasimos A (Synlett, 2003)