copper(l) iodide; n-butyllithium 1.) THF, -70 gradC, 1h, 1h, 2.) -70 gradC, 2h; Yield given. Multistep reaction;

1: 80 percent / cupric chloride, cupric oxide / acetone; H2O / 1 h / 25 - 30 °C 2: 95 percent / ammonium acetate / acetic acid / 5 h / 130 °C View Scheme

copper(II) oxide; copper dichloride in water; acetone T=25 - 30°C; 1 h;