1: palladium 10 on activated carbon; hydrogen / ethanol / 6.5 h / 75 °C / 7500.75 Torr 2: pyridine / dichloromethane / 4.5 h / 30 - 35 °C 3: potassium hydroxide / N,N-dimethyl-formamide / 9 h / 40 °C View Scheme