(2S)-1-[(1S)-1-[Bis(1,1-dimethylethyl)phosphino]ethyl]-2-(diphenylphosphino)ferrocene
(2S)-1-[(1S)-1-[Bis(1,1-dimethylethyl)phosphino]ethyl]-2-(diphenylphosphino)ferrocene 1g : High-purity chiral ferrocene-based bisphosphine ligand for asymmetric hydrogenation and organometallic catalysis. Optimized steric bulk with tert-butyl and diphenylphosphino groups enhances enantioselectivity. Keywords: chiral ligand, ferrocene phosphine, asymmetric catalysis.