chromium(VI) oxide; sulfuric acid in water T=0°C; 0.5 h;

chromium(VI) oxide; sulfuric acid; water in acetone T=0°C; 0.5 h;

1: 85 percent / zinc / dimethylformamide / 0.5 h 2: 82 percent / aq. HCl / acetone / 1 h / Heating 3: 92 percent / diisopropylethylamine / 1,2-dichloro-ethane / 3 h / 55 °C 4: 91 percent / NaBH4 / ethanol / 0.5 h / 0 °C 5: 84 percent / imidazole / dimethylformamide / 1 h / 0 °C 6: 92 percent / OsO4; NaIO4 / tetrahydrofuran; H2O 7: 64 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C 8: 74 percent / CrO3; H2SO4 / H2O / 0.5 h / 0 °C View Scheme

1: 92 percent / diisopropylethylamine / 1,2-dichloro-ethane / 3 h / 55 °C 2: 91 percent / NaBH4 / ethanol / 0.5 h / 0 °C 3: 84 percent / imidazole / dimethylformamide / 1 h / 0 °C 4: 92 percent / OsO4; NaIO4 / tetrahydrofuran; H2O 5: 64 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C 6: 74 percent / CrO3; H2SO4 / H2O / 0.5 h / 0 °C View Scheme

1: 84 percent / imidazole / dimethylformamide / 1 h / 0 °C 2: 92 percent / OsO4; NaIO4 / tetrahydrofuran; H2O 3: 64 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C 4: 74 percent / CrO3; H2SO4 / H2O / 0.5 h / 0 °C View Scheme

1: 91 percent / NaBH4 / ethanol / 0.5 h / 0 °C 2: 84 percent / imidazole / dimethylformamide / 1 h / 0 °C 3: 92 percent / OsO4; NaIO4 / tetrahydrofuran; H2O 4: 64 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C 5: 74 percent / CrO3; H2SO4 / H2O / 0.5 h / 0 °C View Scheme

1: 82 percent / aq. HCl / acetone / 1 h / Heating 2: 92 percent / diisopropylethylamine / 1,2-dichloro-ethane / 3 h / 55 °C 3: 91 percent / NaBH4 / ethanol / 0.5 h / 0 °C 4: 84 percent / imidazole / dimethylformamide / 1 h / 0 °C 5: 92 percent / OsO4; NaIO4 / tetrahydrofuran; H2O 6: 64 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C 7: 74 percent / CrO3; H2SO4 / H2O / 0.5 h / 0 °C View Scheme

1: 64 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C 2: 74 percent / CrO3; H2SO4 / H2O / 0.5 h / 0 °C View Scheme

1: 92 percent / OsO4; NaIO4 / tetrahydrofuran; H2O 2: 64 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h / 20 °C 3: 74 percent / CrO3; H2SO4 / H2O / 0.5 h / 0 °C View Scheme

1: 82 percent / 15 percent hydrochlorid acid / acetone / 0.25 h 2: 91 percent / NaBH4 / ethanol / 0.5 h / 0 °C 3: 92 percent / p-toluenesulfonic acid / CH2Cl2 / 0.5 h / 0 °C 4: LiAlH4 / diethyl ether / 0.5 h 5: CrO3; pyridine / CH2Cl2 / 0.25 h / 0 °C 6: 71 percent / benzene / 3 h 7: 32 percent / CrO3; water; conc. H2SO4 / acetone / 0.5 h / 0 °C View Scheme