1: 1.) n-butyllithium, 2.) cuprous iodide / 1.) cyclohexane, ether, -30 deg C, 2.) ether, -20 deg C, overnight 2: hydrogen / 5percent palladium on barium carbonate / ethyl acetate / 12 h / 2327.2 Torr 3: 70 percent / d-10-camphorsulfonic acid / dioxane; H2O / 2 h / 80 °C View Scheme

copper(l) iodide 1.) ether, -20 deg C, 20 min; 2.) ether, -20 deg C, 20 min; Yield given. Multistep reaction;

copper(l) iodide 1.) ether, -20 deg C, 20 min; 2.) ether, -20 deg C, 20 min; Yield given. Multistep reaction;