Novel Cs‐Symmetric 1,4‐Diphosphine Ligands in the Copolymerization of Propene and Carbon Monoxide: High Regio‐ and Stereocontrol in the Catalytic Performance

New C_s‐symmetric aryl 1,4‐diphosphine ligands were synthesized and tested in the copolymerization of carbon monoxide and propene. The electronic properties of the two different P‐atoms did not affect the high enantioselectivity of the catalyst precursors, thus resulting in high ‘regio’‐ and ‘stereoregular’ copolymers.