1: tetrabutylammonium fluoride / tetrahydrofuran / 1 h / 0 deg C -> r.t. 2: I2, PPh3, imidazole / CH2Cl2 / 0.5 h / Ambient temperature 3: NaHCO3 / acetonitrile / 16 h / Heating 4: 62 percent / n-BuLi / tetrahydrofuran / 0.5 h 5: H2 / Rh(PPh3)3Cl / ethanol; benzene / 2 h / Ambient temperature 6: BF3*Et2O, Me2S / CH2Cl2 / 0.5 h / 0 deg C -> r.t. View Scheme