ferrocene-based chiral ligands; atropisomeric binaphthyl derivatives with enantioselectivities; rhodium-catalysed hydrogenation reactions; functionalised ligand precursor; ionic liquid soluble ligand; enantiomerically pure key intermediate; dehydro amino and itaconic acid derivatives; palladium catalysed allylic alkylation reactions; column chromatographic separation; central carbon and central phosphorus chirality