2: 98 percent / periodic acid, ruthenium trichloride hydrate / acetonitrile; CCl4; H2O / 2 h 3: diisopropylethylamine, diethylphosphoryl cyanide / CH2Cl2 / 14 h / Ambient temperature 4: acetyl chloride, ethanedithiol / methanol / 5 h 5: diisopropylethylamine, (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / CH2Cl2 / 14 h 6: trifluoroacetic acid / CH2Cl2 / 0.25 h View Scheme

2: 98 percent / periodic acid, ruthenium trichloride hydrate / acetonitrile; CCl4; H2O / 2 h 3: diisopropylethylamine, diethylphosphoryl cyanide / CH2Cl2 / 14 h / Ambient temperature 4: acetyl chloride, ethanedithiol / methanol / 5 h 5: diisopropylethylamine, (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / CH2Cl2 / 14 h 6: trifluoroacetic acid / CH2Cl2 / 0.25 h View Scheme

2: 98 percent / periodic acid, ruthenium trichloride hydrate / acetonitrile; CCl4; H2O / 2 h 3: diisopropylethylamine, diethylphosphoryl cyanide / CH2Cl2 / 14 h / Ambient temperature 4: acetyl chloride, ethanedithiol / methanol / 5 h 5: diisopropylethylamine, (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / CH2Cl2 / 14 h View Scheme

2: 98 percent / periodic acid, ruthenium trichloride hydrate / acetonitrile; CCl4; H2O / 2 h 3: diisopropylethylamine, diethylphosphoryl cyanide / CH2Cl2 / 14 h / Ambient temperature 4: acetyl chloride, ethanedithiol / methanol / 5 h 5: diisopropylethylamine, (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate / CH2Cl2 / 14 h 6: trifluoroacetic acid / CH2Cl2 / 0.25 h View Scheme