1: 79 percent / NaIO4 / RuCl3 / CCl4; acetonitrile; H2O 2: 87 percent / petroleum ether / 40 h / 25 °C 3: 90 percent / pyridine 4: 95 percent / DCC, 4-pyrrolidinopyrridine / CH2Cl2 / 5 h / 25 °C 5: 86 percent / DCC, 4-pyrrolidinopyrridine / CH2Cl2 / 5 h / 25 °C 6: Bu4NF / tetrahydrofuran / 3 h / 25 °C 7: Ph3P, EtOsCN=NCO2Et / 20 h / 25 °C 8: 70 percent / MeOH / NaOMe / 2 h / 0 °C View Scheme