1: potassium carbonate; hydrogen / palladium 10 on activated carbon / ethanol / 20 °C 2: sodium hydroxide; water; sodium tetrahydroborate / ethanol 3: hydrogen / palladium 10 on activated carbon / acetic acid 4: potassium carbonate; tetra-(n-butyl)ammonium iodide / ethanol / 20 °C / Reflux 5: sodium hydroxide / ethanol; water View Scheme