1: 68 percent / hydroxylammonium chloride, pyridine / ethanol / 12 h / Ambient temperature 2: H2 / Raney Ni / ethanol / 1 h / 100 °C / 76000.1 - 91200.1 Torr 3: 69 percent / lithium hydroxide / H2O / 48 h / Heating View Scheme