1: NaOCl / CH2Cl2 / 4 h / Ambient temperature 2: H2, B(OH)3 / 10percent Pd/C / tetrahydrofuran; H2O / 4 h / 760 Torr / Ambient temperature 3: CH3SO2Cl, Et3N / CH2Cl2 / 0.67 h / 0 °C 4: 95 percent / tetrahydrofuran / 12 h / Ambient temperature 6: 1.) CuCN 7: pyridinium p-toluenesulfonate (PPTS) / methanol; diethyl ether 8: CrO3, H+ 9: aq. HF / acetonitrile View Scheme

1: NaOCl / CH2Cl2 / 4 h / Ambient temperature 2: H2, B(OH)3 / 10percent Pd/C / tetrahydrofuran; H2O / 4 h / 760 Torr / Ambient temperature 3: CH3SO2Cl, Et3N / CH2Cl2 / 0.67 h / 0 °C 4: 95 percent / tetrahydrofuran / 12 h / Ambient temperature View Scheme