1: LiAlH4 / diethyl ether / 0.17 h / Heating 2: 5.2 g / K5IO6, aq. H2SO4 / ethanol / 1.) 0 deg C, 2 h, 2.) 0 deg C to room temperature View Scheme

1: LiAlH4 / diethyl ether / 0.17 h / Heating 2: 5.2 g / K5IO6, aq. H2SO4 / ethanol / 1.) 0 deg C, 2 h, 2.) 0 deg C to room temperature 3: 9.5 g / K2CO3 / acetone / 3 h / Heating 4: LiCl / H2O; dimethylsulfoxide / 2 h / 165 °C 5: LiAlH4 / diethyl ether / 2 h / Heating 6: MnO2 / benzene / 12 h / Heating View Scheme