Asymmetric reductive ring-opening of bicyclic olefins catalyzed by palladium and nickel complexes

[GRAPHICS] Asymmetric reductive ring opening of oxa- and azabenzonorbornadienes with organic acids and zinc powder under mild conditions catalyzed by Ni(binap)Cl-2 or Pd(binap)l(2) produces the corresponding 1,2-dihydronaphth-1-ols in good to excellent yields with high enantioselectivity.