1: 83 percent / Hg(OAc)2 / 12 h / Heating 2: 81 percent / xylene / 3 h / Heating 3: 80 percent / diethyl ether / 0 °C 4: 98 percent / pyridine / 12 h / Ambient temperature 6: 82 percent / LiAlH4 / tetrahydrofuran / 0 °C View Scheme

1: 83 percent / Hg(OAc)2 / 12 h / Heating 2: 81 percent / xylene / 3 h / Heating 3: 80 percent / diethyl ether / 0 °C 4: 98 percent / pyridine / 12 h / Ambient temperature 6: 82 percent / LiAlH4 / tetrahydrofuran / 0 °C 7: 94 percent / N-Chlorosuccinimide, dimethyl sulfide / 1.) toluene, -23 deg C, 2h; 2.) toluene, triethylamine, -23 deg C, 10 min. View Scheme

mercury(II) diacetate 12 h; Heating;

1: 83 percent / Hg(OAc)2 / 12 h / Heating 2: 81 percent / xylene / 3 h / Heating View Scheme

1: 83 percent / Hg(OAc)2 / 12 h / Heating 2: 81 percent / xylene / 3 h / Heating 3: 80 percent / diethyl ether / 0 °C 4: 98 percent / pyridine / 12 h / Ambient temperature 6: 82 percent / LiAlH4 / tetrahydrofuran / 0 °C 7: 94 percent / N-Chlorosuccinimide, dimethyl sulfide / 1.) toluene, -23 deg C, 2h; 2.) toluene, triethylamine, -23 deg C, 10 min. 8: 94 percent / n-BuLi / tetrahydrofuran / 1 h / Heating 9: 89 percent / 30percent H2O2 / methanol / 12 h / Ambient temperature 10: 70 percent / (CF3CO)2O / 72 h / Ambient temperature 11: 74 percent / NasBH4 / aq. ethanol / 12 h / Ambient temperature View Scheme