1: 51.8 mg / SO3*pyridine, NEt3 / dimethylsulfoxide / 0.33 h / Ambient temperature 2: 29.8 mg / NH2OH*HCl, NaOAc / methanol / 2 h / Ambient temperature 3: 87 percent / 6percent aq.NaOCl / CH2Cl2 / Ambient temperature 4: 97 percent / B(OMe)3, H2 / Raney-Ni (W-2) / methanol; H2O / 20 h / 750.06 Torr / Ambient temperature 5: 97 percent / SO3*pyridine, NEt3 / dimethylsulfoxide / 1.5 h / Ambient temperature 6: 89 percent / xylene / 90 h / Heating 7: H2 / 10percent Pd/C / ethanol / 6 h / 2250.2 Torr / Ambient temperature 8: 43.8 mg / 10percent aq.KOH / methanol / 4 h / Ambient temperature 9: 86 percent / CF3CO2H / 1.17 h / Ambient temperature View Scheme