1: copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride; triethylamine / 20 - 80 °C / Inert atmosphere 2: water; potassium hydroxide / methanol / 0.5 h / 20 °C / Inert atmosphere View Scheme

1: copper(l) iodide; 1,10-phenanthroline; potassium hydroxide / para-xylene / 48 h / 140 °C / Inert atmosphere 2: copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride; triethylamine / 20 - 80 °C / Inert atmosphere 3: water; potassium hydroxide / methanol / 0.5 h / 20 °C / Inert atmosphere View Scheme

1: copper(l) iodide; 1,10-phenanthroline; potassium hydroxide / para-xylene / 48 h / 140 °C / Inert atmosphere 2: copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride; triethylamine / 20 - 80 °C / Inert atmosphere 3: water; potassium hydroxide / methanol / 0.5 h / 20 °C / Inert atmosphere View Scheme

1: CuSO4‵5H2O; potassium carbonate / 18 h / 249.84 °C / Inert atmosphere; Neat (no solvent) 2: copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); triethylamine / tetrahydrofuran / 5 h / 59.84 °C / Inert atmosphere 3: tetrabutyl ammonium fluoride / tetrahydrofuran / 2 h / 20 °C / Inert atmosphere View Scheme

CuI; triethylamine; triphenylphosphine; Pd(PPh3)2Cl2 in tetrahydrofuran