1: 97 percent / diethyl ether 2: 89 percent / DIBAL-H / toluene / 1 h / 20 °C 3: 92 percent / pyridine 4: 85 percent / dimethylsulfoxide / 2 h / 80 °C 5: 81 percent / 20percent KOH / bis-(2-hydroxy-ethyl) ether / 1 h / Heating 6: 98 percent / diethyl ether 7: 84 percent / DIBAL-H / toluene / 1 h / 20 °C 8: 98 percent / pyridine 9: 68 percent / ozone; triphenylphosphane / CH2Cl2; methanol 10: hydroxylamine hydrochloride; sodium acetate / ethanol 11: 1.52 g / sodium acetate / acetic anhydride / Heating 12: potassium hydroxide / methanol / 2 h / Heating 13: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 14: 92 percent / 1 h / 130 °C View Scheme

1: 97 percent / diethyl ether 2: 91 percent / DIBAL-H / toluene / 1 h / 20 °C 3: 90 percent / pyridine 4: 84 percent / dimethylsulfoxide / 2 h / 80 °C 5: 79 percent / 20percent KOH / bis-(2-hydroxy-ethyl) ether / 1 h / Heating 6: 97 percent / diethyl ether 7: 80 percent / DIBAL-H / toluene / 1 h / 20 °C 8: 98 percent / pyridine 9: 69 percent / ozone; triphenylphosphane / CH2Cl2; methanol 10: hydroxylamine hydrochloride; sodium acetate / ethanol 11: 1.19 g / sodium acetate / acetic anhydride / Heating 12: potassium hydroxide / methanol / 2 h / Heating 13: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 14: 92 percent / 1 h / 130 °C View Scheme

1: 89 percent / DIBAL-H / toluene / 1 h / 20 °C 2: 92 percent / pyridine 3: 85 percent / dimethylsulfoxide / 2 h / 80 °C 4: 81 percent / 20percent KOH / bis-(2-hydroxy-ethyl) ether / 1 h / Heating 5: 98 percent / diethyl ether 6: 84 percent / DIBAL-H / toluene / 1 h / 20 °C 7: 98 percent / pyridine 8: 68 percent / ozone; triphenylphosphane / CH2Cl2; methanol 9: hydroxylamine hydrochloride; sodium acetate / ethanol 10: 1.52 g / sodium acetate / acetic anhydride / Heating 11: potassium hydroxide / methanol / 2 h / Heating 12: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 13: 92 percent / 1 h / 130 °C View Scheme

1: 91 percent / DIBAL-H / toluene / 1 h / 20 °C 2: 90 percent / pyridine 3: 84 percent / dimethylsulfoxide / 2 h / 80 °C 4: 79 percent / 20percent KOH / bis-(2-hydroxy-ethyl) ether / 1 h / Heating 5: 97 percent / diethyl ether 6: 80 percent / DIBAL-H / toluene / 1 h / 20 °C 7: 98 percent / pyridine 8: 69 percent / ozone; triphenylphosphane / CH2Cl2; methanol 9: hydroxylamine hydrochloride; sodium acetate / ethanol 10: 1.19 g / sodium acetate / acetic anhydride / Heating 11: potassium hydroxide / methanol / 2 h / Heating 12: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 13: 92 percent / 1 h / 130 °C View Scheme

1: 81 percent / 20percent KOH / bis-(2-hydroxy-ethyl) ether / 1 h / Heating 2: 98 percent / diethyl ether 3: 84 percent / DIBAL-H / toluene / 1 h / 20 °C 4: 98 percent / pyridine 5: 68 percent / ozone; triphenylphosphane / CH2Cl2; methanol 6: hydroxylamine hydrochloride; sodium acetate / ethanol 7: 1.52 g / sodium acetate / acetic anhydride / Heating 8: potassium hydroxide / methanol / 2 h / Heating 9: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 10: 92 percent / 1 h / 130 °C View Scheme

1: 79 percent / 20percent KOH / bis-(2-hydroxy-ethyl) ether / 1 h / Heating 2: 97 percent / diethyl ether 3: 80 percent / DIBAL-H / toluene / 1 h / 20 °C 4: 98 percent / pyridine 5: 69 percent / ozone; triphenylphosphane / CH2Cl2; methanol 6: hydroxylamine hydrochloride; sodium acetate / ethanol 7: 1.19 g / sodium acetate / acetic anhydride / Heating 8: potassium hydroxide / methanol / 2 h / Heating 9: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 10: 92 percent / 1 h / 130 °C View Scheme

1: 98 percent / pyridine 2: 68 percent / ozone; triphenylphosphane / CH2Cl2; methanol 3: hydroxylamine hydrochloride; sodium acetate / ethanol 4: 1.52 g / sodium acetate / acetic anhydride / Heating 5: potassium hydroxide / methanol / 2 h / Heating 6: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 7: 92 percent / 1 h / 130 °C View Scheme

1: 98 percent / pyridine 2: 69 percent / ozone; triphenylphosphane / CH2Cl2; methanol 3: hydroxylamine hydrochloride; sodium acetate / ethanol 4: 1.19 g / sodium acetate / acetic anhydride / Heating 5: potassium hydroxide / methanol / 2 h / Heating 6: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 7: 92 percent / 1 h / 130 °C View Scheme

1: 84 percent / DIBAL-H / toluene / 1 h / 20 °C 2: 98 percent / pyridine 3: 68 percent / ozone; triphenylphosphane / CH2Cl2; methanol 4: hydroxylamine hydrochloride; sodium acetate / ethanol 5: 1.52 g / sodium acetate / acetic anhydride / Heating 6: potassium hydroxide / methanol / 2 h / Heating 7: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 8: 92 percent / 1 h / 130 °C View Scheme

1: 80 percent / DIBAL-H / toluene / 1 h / 20 °C 2: 98 percent / pyridine 3: 69 percent / ozone; triphenylphosphane / CH2Cl2; methanol 4: hydroxylamine hydrochloride; sodium acetate / ethanol 5: 1.19 g / sodium acetate / acetic anhydride / Heating 6: potassium hydroxide / methanol / 2 h / Heating 7: 96 percent / triphenylphosphane / CCl4 / 2 h / Heating 8: 92 percent / 1 h / 130 °C View Scheme