1: Pd0(tris(tert-butyl)phosphine)2; water; caesium carbonate / ethylene glycol dimethyl ether / 40.5 h / 80 °C 2: iodine cloride / dichloromethane / 2 h / 0 °C 3: copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride; triethylamine / tetrahydrofuran / 21 h / 20 °C 4: palladium 10 on activated carbon; hydrogen / ethanol / 21 h / 30 °C / 3040.2 Torr View Scheme