1: H2 / 10percent Pd/C / ethanol / 48 h / 2508 Torr / Ambient temperature 2: Fremy's salt, aq. KH2PO4 / acetone / 4 h / 0 °C 3: 1.) t-BuOK / 1.) THF, 0 deg C, 1 h, 2.) THF, RT, 3 h 4: p-toluenesulfonic acid / acetonitrile / 5 h / Ambient temperature 5: NaHCO3 / ethanol / 3 h / Heating 6: CH2Cl2 / 3 h / Ambient temperature 7: PhI(OCOCF3)2 (PIFA) / various solvent(s) / 0.33 h / Ambient temperature View Scheme