1: pyridine / 36 h / Ambient temperature 2: H2 / 10percent Pd/C / ethanol / 18 h / 3192 Torr 3: CH3COONa / ethanol / 8 h / Heating 4: NaHCO3 / ethanol; H2O / 2 h / ice-cooling 5: 52 percent / aq. 0.4 M HCl / 16 h / 95 - 100 °C 6: 74 percent / conc. HCl / 0.25 h 7: 73 percent / pyridine 8: 96 percent / HgCl2, CdCO3 / H2O; acetone / 1 h / Heating 9: 86 percent / acetonitrile / 0.25 h / Heating 10: 25 percent / H2 / 10percent Pd/C / ethanol; acetic acid / 2 h / 3192 Torr / 2 11: 94 percent / BH3*Me2S / tetrahydrofuran / 4 °C / overnight 12: MeONa / methanol / 3 h View Scheme