1: NaHCO3 / aq. ethanol / Heating 3: N-methylmorpholine N-oxide, selenium dioxide 4: imidazole / dimethylformamide 5: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H 6: anthracene, triethylamine / toluene / 1 h / 20 °C / Irradiation View Scheme

1: NaHCO3 / aq. ethanol / Heating 3: N-methylmorpholine N-oxide, selenium dioxide 4: imidazole / dimethylformamide 5: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H 6: anthracene, triethylamine / toluene / 1 h / 20 °C / Irradiation View Scheme

1: 1.) ozone 2.) PPh3 / 1.) CH2Cl2, MeOH, -60 deg C 2.) CH2Cl2, MeOH, -60 to 0 deg C 2: NaHCO3 / aq. ethanol / Heating 4: N-methylmorpholine N-oxide, selenium dioxide 5: imidazole / dimethylformamide 6: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H 7: anthracene, triethylamine / toluene / 1 h / 20 °C / Irradiation View Scheme

1: 33 percent / NaBH4, CeCl3*6H2O / methanol / further reag.: (S)-BINAL-H 2: anthracene, triethylamine / toluene / 1 h / 20 °C / Irradiation View Scheme