The Ullmann Coupling Reaction of Axially Chiral (S)-2,2′-Bis(1-iodo-2-naphthyloxycarbonyl)-1,1′-binaphthyl

The intramolecular Ullmann coupling of the title diester proceeded in low yield but with virtually complete asymmetric induction in joining the two naphthyl units leading to the 12-membered cyclic diester of (S,S)-configuration, which is the same diastereomer obtained from the reaction of (S)-2,2′-bis(1-bromo-2-naphthoyloxy)-1,1′-binaphthyl.