1: 98 percent / pyridine / 12 h / Ambient temperature 3: 82 percent / LiAlH4 / tetrahydrofuran / 0 °C 4: 94 percent / N-Chlorosuccinimide, dimethyl sulfide / 1.) toluene, -23 deg C, 2h; 2.) toluene, triethylamine, -23 deg C, 10 min. 5: 94 percent / n-BuLi / tetrahydrofuran / 1 h / Heating 6: 89 percent / 30percent H2O2 / methanol / 12 h / Ambient temperature 7: 70 percent / (CF3CO)2O / 72 h / Ambient temperature 8: 74 percent / NasBH4 / aq. ethanol / 12 h / Ambient temperature View Scheme