1: 85 percent / OsO4; 4-methylmorpholine N-oxide / tetrahydrofuran; H2O 2: 100 percent / pyridinium p-toluenesulfonate / toluene / Heating 3: K2CO3; MeOH 4: tetrabutylammonium perruthenate; 4-methylmorpholine N-oxide / CH2Cl2 5: 40 percent / methanol / 2 h / UV-irradiation 6: 90 percent / aq. CF3CO2H / 20 °C View Scheme

1: 91 percent / K2CO3 / methanol / 0.5 h / 20 °C 2: 87 percent / MnO2 / CH2Cl2 / 5 h / 20 °C View Scheme