1.1: 85 percent / NaBH4 / methanol / 2 h / Heating 2.1: HOAc; CuSO4; NaCl / 0.5 h / 50 °C 2.2: 60 percent / AcOH / 6 h / 85 °C View Scheme

1: LiAlH4 / tetrahydrofuran / 2 h / 20 °C 2: 81 percent / Et3N / CH2Cl2 / 1.5 h / 0 °C 3: 91 percent / m-CPBA / CH2Cl2 / 1 h / 0 °C 4: 25 percent / CH3SO3H / CCl4 / 0.33 h / Heating 5: 90 percent / Raney Ni / ethanol / 2 h / Heating 6: POCl3; K2CO3 / acetonitrile / 0.67 h / 60 °C 7: NaBH4 / methanol / 1 h / Heating View Scheme