1: PdCl2(PhCN)2, CuI, piperidine / 1 h / Ambient temperature 2: 79 percent / Red-Al / tetrahydrofuran; toluene / Ambient temperature 3: 80 percent / MnO2 / CH2Cl2 / 1 h View Scheme

bis-triphenylphosphine-palladium(II) chloride; triethylamine in tetrahydrofuran 4 h;