1: 80 percent / HCl, H2 / 5percent Pd/C / ethanol / 4 h / 2068.6 Torr / Ambient temperature 2: 90 percent / LiAlH4 / tetrahydrofuran / 2 h / Heating 3: 94 percent / 18 h / Ambient temperature 4: 98 percent / 5percent K2CO3 / methanol / 2 h / Heating 5: 64 percent / BF3*Et2O / CH2Cl2 / 16 h 6: 97 percent / 1N HCl / methanol / 24 h / 25 °C 7: 66 percent / H2O, paraformaldehyde / tetrahydrofuran / 2 h / Heating 8: TiCl4 / CH2Cl2; diethyl ether / 0.5 h / -78 °C 9: 10percent aq. NaOH / ethanol / 2 h / Heating View Scheme