We describe herein the “1H NMR-assisted catalyst screening method,” which enables us to find the suitable catalyst easily and predict enantioselectivity with the same accuracy as the computational method. Based on this method, we constructed multisubstituted biaryls that occur frequently in many biologically active compounds, chiral ligands, and organocatalysts, with excellent enantioselectivities via chiral phosphoric acid-catalyzed asymmetric bromination.
Described herein is the enantioselective synthesis of multisubstituted biaryl derivatives by chiral phosphoric acidcatalyzed asymmetric bromination. Two asymmetric reactions (desymmetrization and kineticresolution) proceeded successively to afford chiral biaryls in excellent enantioselectivities (up to 99% ee). Both experimental and computational studies suggested that this excellent selectivity