1.1: 92 percent / PCC / CH2Cl2 / 3 h / 20 °C 2.1: 85 percent / NaBH4 / methanol / 0.5 h / 0 °C 3.1: 88 percent / m-CPBA / CH2Cl2 / 1.5 h / 0 °C 4.1: 76 percent / SmI2 / tetrahydrofuran; 1,2-dichloro-ethane / 4 h / 80 - 85 °C 5.1: methanol / 4 h / Heating 6.1: 56 mg / LiAlH4 / tetrahydrofuran / 2 h / Heating 7.1: imidazole; NaH / tetrahydrofuran / 0.67 h / 0 °C 7.2: tetrahydrofuran / 1.5 h / 0 °C 7.3: tetrahydrofuran / 1 h / 0 °C 8.1: 11 mg / azobisisobutyronitrile; n-Bu3SnH / toluene / 4 h / Heating View Scheme