1: triphenylphosphine, iodine, sodium iodide / acetonitrile / 1 h / Heating 2: 1.) CH3)3O+BF4-, 2.) 0.5 N aq. NaOH / 1.) dichloromethane, nitromethane, 0 deg C, 2h, 2.) dichloromethane, 0 deg C, 24 h View Scheme

nickel in tetrahydrofuran 2 h; Ambient temperature;