1: 97 percent / pyridine / Ambient temperature 2: 1.) O3, pyridine, 2.) dimethyl sulfide / 1.) CH2Cl2, -70 deg C 3: 88 percent / NaBH4 / CH2Cl2; ethanol / 1 h / Ambient temperature 4: 100 percent / pyridine / 0 - 5 °C 5: 100 percent / NaI / acetone / 5 h / Heating 6: 1.) butyllithium, HMPA / 1.) THF, hexane, from -25 to -20 deg C, 20 min, 2.) THF, hexane, -20 deg C, 2 h 7: Na-Hg, Na2HPO4, MeOH / tetrahydrofuran / 3 h / Ambient temperature 8: 30 percent / H3PMo12O40*5H2O / dioxane; H2O / 3 h / 30 °C View Scheme