Chiral Ionic Phosphites and Diamidophosphites: A Novel Group of Efficient Ligands for Asymmetric Catalysis

Abstract Seven members of a new class of chiral P‐monodentate cationic phosphites and diamidophosphites have been synthesized for the first time and tested as ligands in asymmetric transition metal catalysis. Up to 96 % ee was achieved in the rhodium‐catalyzed asymmetric hydrogenation of functionalized olefins and up to 99 % ee in the palladium‐catalyzed allylic allylation. Applications of the immobilized cationic rhodium complex to asymmetric catalytic synthesis have also been demonstrated.