1.1: 95 percent / triphenylphosphine; diethyl azodicarboxylate / CHCl3 / 0.5 h / 20 °C 2.1: KOH / H2O; methanol / 23 h / 40 °C 3.1: 173 mg / triethylamine; 4-(dimethylamino)pyridine / CH2Cl2 / 2.75 h / 20 °C 4.1: 82 percent / KOH / H2O; methanol / 1 h / 20 °C 5.1: oxalyl chloride / dimethylformamide; benzene / 1 h / 20 °C 6.1: CH2Cl2 / 2 h / 20 °C 7.1: 115 mg / (PHS)3Sb; air / diethyl ether / 1.5 h / 20 °C 8.1: 79 percent / pyridinium chlorochromate; sodium acetate / CH2Cl2 / 2 h / 20 °C 9.1: 96 percent / diethyl ether / 0.75 h / -78 °C 10.1: 100 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2.5 h / 20 °C 11.1: 54 percent / imidazole; iodine; triphenylphosphine / 2,6-lutidine / benzene; 1,2-dichloro-ethane; H2O / 0.25 h / 80 °C 12.1: 51 percent / p-TsOH / CH2Cl2 / 2.3 h / 20 °C 13.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 14.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 15.1: ozone / CH2Cl2 / -78 °C 15.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1.1: 79 percent / pyridinium chlorochromate; sodium acetate / CH2Cl2 / 2 h / 20 °C 2.1: 96 percent / diethyl ether / 0.75 h / -78 °C 3.1: 100 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2.5 h / 20 °C 4.1: 54 percent / imidazole; iodine; triphenylphosphine / 2,6-lutidine / benzene; 1,2-dichloro-ethane; H2O / 0.25 h / 80 °C 5.1: 51 percent / p-TsOH / CH2Cl2 / 2.3 h / 20 °C 6.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 7.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 8.1: ozone / CH2Cl2 / -78 °C 8.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1.1: 96 percent / diethyl ether / 0.75 h / -78 °C 2.1: 100 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2.5 h / 20 °C 3.1: 54 percent / imidazole; iodine; triphenylphosphine / 2,6-lutidine / benzene; 1,2-dichloro-ethane; H2O / 0.25 h / 80 °C 4.1: 51 percent / p-TsOH / CH2Cl2 / 2.3 h / 20 °C 5.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 6.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 7.1: ozone / CH2Cl2 / -78 °C 7.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1.1: 100 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2.5 h / 20 °C 2.1: 54 percent / imidazole; iodine; triphenylphosphine / 2,6-lutidine / benzene; 1,2-dichloro-ethane; H2O / 0.25 h / 80 °C 3.1: 51 percent / p-TsOH / CH2Cl2 / 2.3 h / 20 °C 4.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 5.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 6.1: ozone / CH2Cl2 / -78 °C 6.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1.1: CH2Cl2 / 2 h / 20 °C 2.1: 115 mg / (PHS)3Sb; air / diethyl ether / 1.5 h / 20 °C 3.1: 79 percent / pyridinium chlorochromate; sodium acetate / CH2Cl2 / 2 h / 20 °C 4.1: 96 percent / diethyl ether / 0.75 h / -78 °C 5.1: 100 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2.5 h / 20 °C 6.1: 54 percent / imidazole; iodine; triphenylphosphine / 2,6-lutidine / benzene; 1,2-dichloro-ethane; H2O / 0.25 h / 80 °C 7.1: 51 percent / p-TsOH / CH2Cl2 / 2.3 h / 20 °C 8.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 9.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 10.1: ozone / CH2Cl2 / -78 °C 10.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1.1: oxalyl chloride / dimethylformamide; benzene / 1 h / 20 °C 2.1: CH2Cl2 / 2 h / 20 °C 3.1: 115 mg / (PHS)3Sb; air / diethyl ether / 1.5 h / 20 °C 4.1: 79 percent / pyridinium chlorochromate; sodium acetate / CH2Cl2 / 2 h / 20 °C 5.1: 96 percent / diethyl ether / 0.75 h / -78 °C 6.1: 100 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2.5 h / 20 °C 7.1: 54 percent / imidazole; iodine; triphenylphosphine / 2,6-lutidine / benzene; 1,2-dichloro-ethane; H2O / 0.25 h / 80 °C 8.1: 51 percent / p-TsOH / CH2Cl2 / 2.3 h / 20 °C 9.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 10.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 11.1: ozone / CH2Cl2 / -78 °C 11.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1.1: 115 mg / (PHS)3Sb; air / diethyl ether / 1.5 h / 20 °C 2.1: 79 percent / pyridinium chlorochromate; sodium acetate / CH2Cl2 / 2 h / 20 °C 3.1: 96 percent / diethyl ether / 0.75 h / -78 °C 4.1: 100 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2.5 h / 20 °C 5.1: 54 percent / imidazole; iodine; triphenylphosphine / 2,6-lutidine / benzene; 1,2-dichloro-ethane; H2O / 0.25 h / 80 °C 6.1: 51 percent / p-TsOH / CH2Cl2 / 2.3 h / 20 °C 7.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 8.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 9.1: ozone / CH2Cl2 / -78 °C 9.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1.1: 82 percent / KOH / H2O; methanol / 1 h / 20 °C 2.1: oxalyl chloride / dimethylformamide; benzene / 1 h / 20 °C 3.1: CH2Cl2 / 2 h / 20 °C 4.1: 115 mg / (PHS)3Sb; air / diethyl ether / 1.5 h / 20 °C 5.1: 79 percent / pyridinium chlorochromate; sodium acetate / CH2Cl2 / 2 h / 20 °C 6.1: 96 percent / diethyl ether / 0.75 h / -78 °C 7.1: 100 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2.5 h / 20 °C 8.1: 54 percent / imidazole; iodine; triphenylphosphine / 2,6-lutidine / benzene; 1,2-dichloro-ethane; H2O / 0.25 h / 80 °C 9.1: 51 percent / p-TsOH / CH2Cl2 / 2.3 h / 20 °C 10.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 11.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 12.1: ozone / CH2Cl2 / -78 °C 12.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1.1: 51 percent / p-TsOH / CH2Cl2 / 2.3 h / 20 °C 2.1: 75 percent / p-TsOH; N-(phenylseleno)phthalimide / CH2Cl2 / 6.5 h / 20 °C 3.1: 60 percent / 4-(dimethylamino)pyridine / pyridine / 24 h / 40 °C 4.1: ozone / CH2Cl2 / -78 °C 4.2: 62 percent / pyridine / CH2Cl2; CCl4 / 1.5 h / Heating View Scheme

1: -78 °C 2: 64 percent / tetrahydrofuran / -78 °C 3: pyridine / 6 h / Ambient temperature 4: water / H2SO4 / methanol / 30 h / Ambient temperature 5: 91 percent / n-butyllithium / tetrahydrofuran / 0 °C 6: water, oxalic acid / methanol / 4 h / Ambient temperature 8: m-chloroperbenzoic acid / CH2Cl2 / 4.5 h / Ambient temperature 9: LiAlH4 / diethyl ether / 1 h / Ambient temperature 10: pyridine / 80 °C 11: 0.5 h / 150 °C View Scheme