1: pyridine 2: H2 / Raney Nickel / methanol / 0.33 h / 1034.3 Torr 3: 90 percent / hydrazine hydrate / ethanol; H2O / 2 h / Heating 4: 76 percent / 1 M aq. HCl / 1.25 h / Heating View Scheme

1: pyridine 2: H2 / Raney Nickel / methanol / 0.33 h / 1034.3 Torr View Scheme

1: pyridine 2: H2 / Raney Nickel / methanol / 0.33 h / 1034.3 Torr 3: 90 percent / hydrazine hydrate / ethanol; H2O / 2 h / Heating 4: 76 percent / 1 M aq. HCl / 1.25 h / Heating View Scheme

Multi-step reaction with 2 steps 1: 62 percent / H2O / 1) room temperature, overnight, 2) steam bath, 2 h2: conc. H2SO4 / 1 h / Heating