1: NaIO4; RuCl3 / ethyl acetate; acetonitrile; H2O / 22 h / 30 °C 2: 0.11704 g / diethyl ether / 0.17 h 3: 71 percent / Zn TiCl4 / tetrahydrofuran / 0.25 h / 25 °C 4: aq. LiOH / methanol / 1 h / Heating 5: 0.02051 g / liquid NH3; Li / tetrahydrofuran / -78 °C View Scheme