1: potassium hexacyanoferrate(III); potassium carbonate; H6O6Os(2-)*2K(1+); (DHQ)2PHAL; methanesulfonamide / tert-butyl alcohol; water / 24 h / 0 °C 2: hydrogen; palladium on activated charcoal / methanol / 15 h 3: 1,8-diazabicyclo[5.4.0]undec-7-ene; diphenyl phosphoryl azide / tetrahydrofuran / 25 h / 0 - 20 °C / |Inert atmosphere 4: hydrogen; palladium on activated charcoal / ethyl acetate 5: potassium carbonate; water / methanol / 12 h View Scheme