Optically Active Dinuclear Palladium Complexes Containing a Pd-Pd Bond: Preparation and Enantioinduction Ability in Asymmetric Ring-Opening Reactions

Optically active dinuclear palladium complexes containing a Pd-Pd bond were prepared by using (R,R)-bis(tert-butylmethylphosphino)methane ((R,R),t-Bu-MiniPHOS). The dinuclear palladium complexes coupled with silver triflate exhibited good to excellent enantioselectivities up to 99% in palladium-catalyzed alkylative ring-opening reactions of azabenzonorbornadienes.