S1 Supporting Information A Very Simple, Highly Stereoselective and Modular Synthesis of Ferrocene-Based P-Chiral Phosphine Ligands** Weiping Chen,* William Mbafor, Stanley M. Roberts, John Whittall NMe 2 Me P R 2 R 1 NMe 2 Me 1) t-BuLi, -78 ºC~rt 2) R1PCl2, -78 ºC~rt 3) R 2 M, -78 ºC~rt Fe Fe (R)-1 2 OAc Me P R 2 R 1 Fe 7 Ac 2 O rt HPCy 2 AcOH rt MeNH 2 (aq.) THF-MeOH N Me P R 1 R 2 Me PPh 2 NHMe Me P R 1 R 2 Fe Fe 4 8 Ph 2 PCl Et 3 N N Me P R 1 R 2 Me Et 3 N, toluene rt, overnight O P O Cl O P O Fe toluene rt, overnight 5 PCy 2 Me P R 1 R 2 Fe a. R 1 = Ph, R 2 = o-An b. R 1 = Ph, R 2 = 1-Np c. R 1 = 1-Np, R 2 = Ph d. R 1 = Ph, R 2 = 2-Np e. R 1 = Ph, R 2 = 2-Biph 6 (R c , S Fc , S P )-2-[(1-N,N-Dimethylamino)ethyl]-1-[(2-methoxyphenyl)phenyl phosphino]ferrocene [(R C ,S Fc ,S P )-2a]: To a solution of (R)-N,N-dimethyl-1-ferrocenylethylamine [(R)-Ugi’s amine, (R)-1] (3.86 g, 15 mmol) in Et 2 O (50 mL) was added 1.7 M t-BuLi solution in pentane (9.7 mL,