1: pyridinium chlorochromate / dichloromethane / 20 °C 2: dimethylsulfide borane complex; (R)-tetrahydro-1-methyl-3,3-diphenyl-1H,3H-pyrrolo[1,2-c]-[1,3,2]oxazaborole / toluene; tetrahydrofuran / -30 - -25 °C 3: 1H-imidazole / dichloromethane / 20 °C 4: dichloromethane / 20 °C / Inert atmosphere 5: potassium carbonate; hydrogen / palladium 10 on activated carbon / ethanol / 20 °C 6: sodium hydroxide; water; sodium tetrahydroborate / ethanol 7: hydrogen / palladium 10 on activated carbon / acetic acid 8: potassium carbonate; tetra-(n-butyl)ammonium iodide / ethanol / 20 °C / Reflux 9: sodium hydroxide / ethanol; water View Scheme