1: K-Selectride, KI / diethyl ether / 25 °C 2: 93 percent / HgCl2, HgO / methanol; H2O / Heating 3: 76 percent / hydrogen peroxide / methanol; H2O 4: tetrahydrofuran / Ambient temperature 5: 86 percent / tetrahydrofuran / Ambient temperature 6: HCl / methanol 7: 90 percent / p-carboxybenzenesulfonyl azide, Et3N / acetonitrile / 0 - 20 °C 8: rhodium(II) acetate / benzene / 80 °C 9: DMAP, i-Pr2NEt / acetonitrile / 0 °C View Scheme