Perfect Control of Diastereomeric Complexation of C2-Symetric Chiral 1,1-Bis(oxazolinyl)ferrocene Ligands

Upon complexation with Pd(II), both chiral 1,1ʹ-bis(oxazolinyl)ferrocene ligand 1 and its planar chiral derivative 2 afforded the corresponding 1:2 ligand-Pd(II) complex. On the other hand, upon complexation with copper(I) chloride, both 1 and 2 afforded only one of the two possible diastereomeric 1:1 ligand-Cu(I) complexes. The twists of the two Cp rings of the copper(I) complexes of 1 and 2 are opposite to each other, which is ascribed to the effect of the planar chirality in 2.