Axially dissymmetric (R)‐(+)‐5,5′,6,6′,7,7′,8,8′ octahydro‐[1,1′]binaphthyldiimine chiral salen type‐ligands for copper‐catalyzed asymmetric aziridination

Axially dissymmetric chiral diimine ligand 2 was prepared from the reaction of (R)-(+)-5,5',6,6',7,7',8,8'-octahydro-[1,1']binaphthyl-2,2'-diamine 1 with 2,6-dichlorobenzaldehyde. The catalytic asymmetric aziridination of alkenes was examined using this novel chiral ligand. Excellent enantioselective aziridination of cinnamates was achieved using C(2)-symmetric chiral ligand 2.