1: 1N aq. HCl / 3 h / 22 °C 2: 43 percent / H2, AcONa / 10percent Pd/C / methanol / 6 h / 30 °C / 760 Torr 3: 57 percent / 10percent aq. Na2CO3 / 1 h / Ambient temperature 4: 73 percent / H2 / 10percent Pd/C / methanol / 1.33 h / 760 Torr / Ambient temperature View Scheme

1: 1N aq. HCl / 3 h / 22 °C 2: 43 percent / H2, AcONa / 10percent Pd/C / methanol / 6 h / 30 °C / 760 Torr 3: 57 percent / 10percent aq. Na2CO3 / 1 h / Ambient temperature 4: 76 percent / conc. aq. NH3, 30percent aq. H2O2 / 4 h / 2 °C 5: 67 percent / H2 / 10percent Pd/C / acetic acid; H2O / 1.5 h / 21 °C / 760 Torr View Scheme