1: 66 percent / CuI; PPh3; Et3N / Pd(PPh3)2Cl2 / ethanol / 12 h / 60 °C 2: KOH / H2O; tetrahydrofuran; methanol / 1 h View Scheme

sodium hydroxide; copper(l) iodide; N-benzyl-N,N,N-triethylammonium chloride; tetrakis(triphenylphosphine) palladium(0) in benzene T=80°C;