Synthesis of binaphthyl bridged chiral bis-corrole

Chiral bis-corrole 1 and 2 were prepared by reaction of (s)-2,2′-bis(bromomethyl)-1,1′-binaphthyl and 10-(4-hydroxylphenyl)-5,15-bis(pentafluorophenyl)corrole or 10-(3-hydroxylphenyl)-5,15-bis(pentafluorophenyl)corrole in DMF at 60 °C in the presence of anhydrous K2CO3 with an isolated yield ∼8%. Both 1 and 2 exhibit unsymmetrical induced circular dichroism (ICD) in the soret band with positive exciton chirality.