1.1: |Electrochemical reaction 2.1: |Electrochemical reaction 3.1: potassium carbonate / N,N-dimethyl-formamide / 7 h / 0 °C 4.1: 5 palladium on charcoal; hydrogen / methanol / 24 h / 20 °C 5.1: sodium hydroxide / methanol; water / 17 h / 0 °C 6.1: (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; triethylamine / acetonitrile / 16 h / 20 °C 7.1: trichlorophosphate / toluene / 16 h / |Reflux 7.2: 6 h / -78 °C 8.1: hydrogen; palladium(II) oxide hydrate / ethyl acetate; methanol; water / 23 h / 20 °C 9.1: ammonia; sodium / 1,4-dioxane / 2 h / -78 °C View Scheme