Enantioselective Synthesis of Planar Chiral Ferrocenes via Palladium-Catalyzed Direct Coupling with Arylboronic Acids

Enantioselective Pd(II)-catalyzed direct coupling of aminomethylferrocene derivatives with boronic acids was realized. With commercially available Boc-l-Val-OH as a ligand, planar-chiral ferrocenes could be synthesized in yields of 14–81% with up to 99% ee under mild conditions.