Chiral Induction in a Ribose-Decorated Metallostar through Intrinsic and Interionic Diastereomeric Interactions

Abstract
A ribose-functionalized bpy ligand has been prepared and shown to give modest diastereomeric excesses of Λ-[FeL3]2+ complexes; interconversion of Δ and Λ cations is relatively fast, and in CHCl3, the favored complexes with Δ- or Λ-TRISPHAT counterions are homochiral, (Δ+Δ-) or (Λ+Λ-). In the case of the Δ-TRISPHAT salt, a single diastereomer is observed (de ≥ 96%).