Synthesis of Axially Chiral Biaryls through Cobalt(II)‐Catalyzed Atroposelective C−H Arylation

Highly efficient synthesis of axially chiral biaryl amines through cobalt‐catalyzed atroposelective C−H arylation using easily accessible cobalt(II) salt and salicyloxazoline ligand has been reported. This methodology provides a straightforward and sustainable access to a broad range of enantioenriched biaryl‐2‐amines in good yields (up to 99 %) with excellent enantioselectivities (up to 99 % ee). The synthetic utility of the unprecedented method is highlighted by its scalability and diverse transformations. Cobalt‐catalyzed atroposelective C−H arylation/DKR reaction was realized. This strategy provides an efficient and sustainable method for the synthesis of axially chiral biaryl‐2‐amines in good yields (up to 99 %) with excellent enantioselectivities (up to 99 %ee).