1: LiAlH4 / tetrahydrofuran / 2 h / Heating 2: Et3N / toluene / 2 h / 0 °C 3: LiAlH4 / tetrahydrofuran / Ambient temperature 4: 99 percent / 1 M H2SO4 / acetone / 2 h / Ambient temperature 5: 82 percent / pyridinium tolunen-p-sulfonate, LiBr / N,N-dimethyl-acetamide / 5 h / 160 °C 6: 80 percent / OsO4, K3<Fe(CN)6>, 1,4-bis(0-O-dihydroquinidinyl)phthalazine, K2CO3, methanesulfonamide / 2-methyl-propan-2-ol; H2O / 15 h / Ambient temperature View Scheme