1: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 2: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme

1: 92 percent / MCPBA / CH2Cl2 / 0.33 h / 0 °C 2: 97 percent / AcONa / 7 h / Heating 3: 71 percent / tetrahydrofuran / 4 h / -90 °C 4: 98 percent / pyridine / 1 h / 0 °C 5: 89 percent / amberlyst 15 / 84 h / Ambient temperature 6: 98 percent / Et3N / CH2Cl2 / 1.5 h / 0 °C 7: 88 percent / AcOH-H2O / 13 h / 60 °C 8: 90 percent / imidazole / dimethylformamide / 0.5 h / Ambient temperature 9: 87 percent / K2CO3 / methanol / 9 h / Ambient temperature 10: 93 percent / n-Bu4NF, H2O / tetrahydrofuran / 0.04 h / 0 °C 11: 81 percent / MnO2 / CH2Cl2 / 0.4 h / Ambient temperature 12: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 13: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme

1: 97 percent / AcONa / 7 h / Heating 2: 71 percent / tetrahydrofuran / 4 h / -90 °C 3: 98 percent / pyridine / 1 h / 0 °C 4: 89 percent / amberlyst 15 / 84 h / Ambient temperature 5: 98 percent / Et3N / CH2Cl2 / 1.5 h / 0 °C 6: 88 percent / AcOH-H2O / 13 h / 60 °C 7: 90 percent / imidazole / dimethylformamide / 0.5 h / Ambient temperature 8: 87 percent / K2CO3 / methanol / 9 h / Ambient temperature 9: 93 percent / n-Bu4NF, H2O / tetrahydrofuran / 0.04 h / 0 °C 10: 81 percent / MnO2 / CH2Cl2 / 0.4 h / Ambient temperature 11: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 12: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme

1: 93 percent / n-Bu4NF, H2O / tetrahydrofuran / 0.04 h / 0 °C 2: 81 percent / MnO2 / CH2Cl2 / 0.4 h / Ambient temperature 3: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 4: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme

1: 89 percent / amberlyst 15 / 84 h / Ambient temperature 2: 98 percent / Et3N / CH2Cl2 / 1.5 h / 0 °C 3: 88 percent / AcOH-H2O / 13 h / 60 °C 4: 90 percent / imidazole / dimethylformamide / 0.5 h / Ambient temperature 5: 87 percent / K2CO3 / methanol / 9 h / Ambient temperature 6: 93 percent / n-Bu4NF, H2O / tetrahydrofuran / 0.04 h / 0 °C 7: 81 percent / MnO2 / CH2Cl2 / 0.4 h / Ambient temperature 8: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 9: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme

1: 71 percent / tetrahydrofuran / 4 h / -90 °C 2: 98 percent / pyridine / 1 h / 0 °C 3: 89 percent / amberlyst 15 / 84 h / Ambient temperature 4: 98 percent / Et3N / CH2Cl2 / 1.5 h / 0 °C 5: 88 percent / AcOH-H2O / 13 h / 60 °C 6: 90 percent / imidazole / dimethylformamide / 0.5 h / Ambient temperature 7: 87 percent / K2CO3 / methanol / 9 h / Ambient temperature 8: 93 percent / n-Bu4NF, H2O / tetrahydrofuran / 0.04 h / 0 °C 9: 81 percent / MnO2 / CH2Cl2 / 0.4 h / Ambient temperature 10: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 11: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme

1: 98 percent / Et3N / CH2Cl2 / 1.5 h / 0 °C 2: 88 percent / AcOH-H2O / 13 h / 60 °C 3: 90 percent / imidazole / dimethylformamide / 0.5 h / Ambient temperature 4: 87 percent / K2CO3 / methanol / 9 h / Ambient temperature 5: 93 percent / n-Bu4NF, H2O / tetrahydrofuran / 0.04 h / 0 °C 6: 81 percent / MnO2 / CH2Cl2 / 0.4 h / Ambient temperature 7: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 8: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme

1: 88 percent / AcOH-H2O / 13 h / 60 °C 2: 90 percent / imidazole / dimethylformamide / 0.5 h / Ambient temperature 3: 87 percent / K2CO3 / methanol / 9 h / Ambient temperature 4: 93 percent / n-Bu4NF, H2O / tetrahydrofuran / 0.04 h / 0 °C 5: 81 percent / MnO2 / CH2Cl2 / 0.4 h / Ambient temperature 6: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 7: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme

1: 87 percent / K2CO3 / methanol / 9 h / Ambient temperature 2: 93 percent / n-Bu4NF, H2O / tetrahydrofuran / 0.04 h / 0 °C 3: 81 percent / MnO2 / CH2Cl2 / 0.4 h / Ambient temperature 4: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 5: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme

1: 98 percent / pyridine / 1 h / 0 °C 2: 89 percent / amberlyst 15 / 84 h / Ambient temperature 3: 98 percent / Et3N / CH2Cl2 / 1.5 h / 0 °C 4: 88 percent / AcOH-H2O / 13 h / 60 °C 5: 90 percent / imidazole / dimethylformamide / 0.5 h / Ambient temperature 6: 87 percent / K2CO3 / methanol / 9 h / Ambient temperature 7: 93 percent / n-Bu4NF, H2O / tetrahydrofuran / 0.04 h / 0 °C 8: 81 percent / MnO2 / CH2Cl2 / 0.4 h / Ambient temperature 9: 63 percent / ceric ammonium nitrate (CAN), pyridine / acetonitrile; CH2Cl2; H2O / 1 h / 0 °C 10: 70 percent / PPh3, DEAD / tetrahydrofuran / 1 h / Ambient temperature View Scheme