1: 98 percent / Cu2I2; triethylamine / PdCl2(PPh3)2 / 15 h / 20 °C 2: 100 percent / NaOH / toluene / 10 h / Heating View Scheme

copper(l) iodide; triethylamine; bis-triphenylphosphine-palladium(II) chloride T=20°C; Sonogashira reaction; 15 h;