Molecular design of DABNTf as a highly efficient resolving reagent for racemic Pd complex with Tropos biphenylphosphine (BIPHEP) ligand: Circular dichroism (CD) spectra of enantiopure BIPHEP-Pd complex

The racemic Pd complexes with chirally flexible (tropos) biphenylphosphine (BIPHEP) ligands can be resolved but transformed into the enantio‐ and diastereo‐pure complex. The enantiopure metal complex of BIPHEP ligand is thus obtained through enantiomer‐selective complexation of a racemic BIPHEP‐Pd complex with enantiopure 1,1′‐binaphthyl‐2,2′‐di(triflyl)amide, DABNTf. The differential CD spectra of the enantiopure BIPHEP‐Pd complex is also reported. Chirality 15:105–107, 2003. © 2002 Wiley‐Liss, Inc.