1: hydrogen / palladium 10 on activated carbon / methanol / 50 °C / 3750.38 Torr 2: pyridine / dichloromethane / 3.17 h / 30 - 35 °C 3: hydrogen / Raney-Ni / methanol / 24 h / 25 °C / 7500.75 Torr 4: sodium iodide; pyridine / butanone / 16.25 h / Reflux View Scheme