Dynamic Control of Ligand Conformation: Asymmetric Epoxidation Using Achiral (Salen)manganese(III) Complex

Abstract

High enantioselectivity and good chemical yields were realized in the epoxidation of 2,2-dimethylchromene derivatives using achiral (salen)manganese(III) complex 5 as a catalyst in the presence of axially chiral bipyridine N,N′-dioxide 4.