1: sodium methylate; methanol / 4 h / 30 °C 2: triethylamine / dichloromethane / 18 h / 0 - 20 °C 3: 5 h / 70 °C 4: pyridine / 1 h / 0 - 20 °C 5: palladium 10 on activated carbon; hydrogen / ethanol / 18 h / 50 - 55 °C / 3000.3 - 3750.38 Torr View Scheme