Journal of the American Chemical Society, Vol.122, No.51, 12874-12875, 2000
beta,beta '- and alpha,beta,beta '-annulation reactions of cyclic enamines: Enantioselective synthesis of bicyclo[3.n.1]alkenones (n=2, 3) and tricyclo[3.3.0.0(2,8)]octanes from Fischer alkenyl carbene complexes