1: copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); triethylamine / acetonitrile / |Inert atmosphere; |Reflux 2: sodium hydrogencarbonate; magnesium sulfate; sodium periodate; ruthenium trichloride / acetonitrile; tetrachloromethane; water / 2 h / 20 °C 3: 1,8-diazabicyclo[5.4.0]undec-7-ene / dimethyl sulfoxide / 1 h / 100 °C View Scheme