Enantioselective Synthesis of Five to Eight‐Membered P‐Stereogenic Benzo‐Fused Heterocycles via Copper‐Catalyzed Dynamic Kinetic Resolution
Xue Wang, Baixue Liu, Lei Ge, Shanbo Hou, Min Liu, Wenqiang Yang
Abstract
Abstract P‐stereogenic benzo‐fused heterocycles is a privileged skeleton due to their outstanding catalytic properties and bioactivities. However, their enantioselective synthesis is still underdeveloped. Here we demonstrate the use of easily accessible racemic H−P(O) compounds as starting materials and commercial chiral N 1 , N 2 ‐dimethyl‐1,2‐diphenylethane‐1,2‐diamine ligand in combination with Cu(I) catalysts to enable an attractive dynamic kinetic C( sp 2)−P cross‐coupling reaction. This protocol not only exhibits a broad substrate scope but also provides general access to a diverse range of useful P‐stereogenic five‐, six‐, seven‐ and eight‐membered benzo‐fused O, P‐ containing heterocycles with good to high yields and enantioselectivities.