Asymmetric Hydroformylation of Heterocyclic Olefins Mediated by Supramolecularly Regulated Rhodium‐Bisphosphite Complexes.

Rhodium complexes derived from conformationally transformable α,ω-biphosphite ligands in combination with an alkali metal BARF-salt as a regulation agent afford high regio- and/or enantioselectivities in asymmetric hydroformylation of vinyl compounds and heterocyclic olefins.