1: water / H2SO4 / methanol / 30 h / Ambient temperature 2: 91 percent / n-butyllithium / tetrahydrofuran / 0 °C 3: water, oxalic acid / methanol / 4 h / Ambient temperature 5: m-chloroperbenzoic acid / CH2Cl2 / 4.5 h / Ambient temperature 6: LiAlH4 / diethyl ether / 1 h / Ambient temperature 7: pyridine / 80 °C 8: 0.5 h / 150 °C View Scheme

1: 64 percent / tetrahydrofuran / -78 °C 2: pyridine / 6 h / Ambient temperature 3: water / H2SO4 / methanol / 30 h / Ambient temperature 4: 91 percent / n-butyllithium / tetrahydrofuran / 0 °C 5: water, oxalic acid / methanol / 4 h / Ambient temperature 7: m-chloroperbenzoic acid / CH2Cl2 / 4.5 h / Ambient temperature 8: LiAlH4 / diethyl ether / 1 h / Ambient temperature 9: pyridine / 80 °C 10: 0.5 h / 150 °C View Scheme

1: pyridine / 6 h / Ambient temperature 2: water / H2SO4 / methanol / 30 h / Ambient temperature 3: 91 percent / n-butyllithium / tetrahydrofuran / 0 °C 4: water, oxalic acid / methanol / 4 h / Ambient temperature 6: m-chloroperbenzoic acid / CH2Cl2 / 4.5 h / Ambient temperature 7: LiAlH4 / diethyl ether / 1 h / Ambient temperature 8: pyridine / 80 °C 9: 0.5 h / 150 °C View Scheme

1: 63 percent / DIBAL-H / 1.) -40 deg C, 1.0 h, 2.) 0 deg C, 0.5 h 2: 71 percent / Et3N, 4-N,N-dimethylaminopyridine View Scheme

1.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 2.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 3.1: ozone / CH2Cl2 / -78 °C 3.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 2.1: ozone / CH2Cl2 / -78 °C 2.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1: 83 percent / diisobutylaluminium hydride (DIBAH) / 1,2-dimethoxy-ethane; hexane / 1.5 h / -78 - 0 °C 2: 84 percent / 4-(dimethylamino)pyridine, triethylamine / 16 h / Ambient temperature View Scheme

1: 58 mg / m-chloroperbenzoic acid, 5percent sodium hydrogencarbonate / CH2Cl2 / 4 h / -15 °C 2: 77 mg / LAH / 1,2-dimethoxy-ethane; tetrahydrofuran / 2 h / Ambient temperature 3: 80 percent / lead(IV) acetate / pyridine / 0.5 h / Ambient temperature 4: 83 percent / diisobutylaluminium hydride (DIBAH) / 1,2-dimethoxy-ethane; hexane / 1.5 h / -78 - 0 °C 5: 84 percent / 4-(dimethylamino)pyridine, triethylamine / 16 h / Ambient temperature View Scheme

1: 1.) lithium diisopropylamide (LDA), 2.) molybdenum peroxide MoO5*Py*HMPA (MoOPH) / 1.) THF, hexane, -78 deg C, 1 h, 2.) THF, hexane, a) -78 deg C, 1 h, b) RT, 30 min 2: 58 mg / m-chloroperbenzoic acid, 5percent sodium hydrogencarbonate / CH2Cl2 / 4 h / -15 °C 3: 77 mg / LAH / 1,2-dimethoxy-ethane; tetrahydrofuran / 2 h / Ambient temperature 4: 80 percent / lead(IV) acetate / pyridine / 0.5 h / Ambient temperature 5: 83 percent / diisobutylaluminium hydride (DIBAH) / 1,2-dimethoxy-ethane; hexane / 1.5 h / -78 - 0 °C 6: 84 percent / 4-(dimethylamino)pyridine, triethylamine / 16 h / Ambient temperature View Scheme

1: 0.5 h / 310 °C 2: m-chloroperbenzoic acid / CH2Cl2 / 4.5 h / Ambient temperature 3: LiAlH4 / diethyl ether / 1 h / Ambient temperature 4: pyridine / 80 °C 5: 0.5 h / 150 °C View Scheme