1: 25 percent / tert-butylhydroperoxide, titanium(IV) isopropoxyde, D-(-)-dibutyl tartarate / CH2Cl2 / -20 °C 2: 92 percent / NaH / dimethylsulfoxide / Ambient temperature 3: 93 percent / diethyl ether / -20 °C 5: 90 percent / pyridine 6: 91 percent / potassium tert-butylate / dimethylformamide 7: 99 percent / Na2WO4, H2O2 / 70 °C 8: 95 percent / pyridinium p-toluenesulphonate / CH2Cl2 9: 1) lithium diisopropylamide / 1) THF, -78 deg C 10: 52 percent / 5percent Na-Hg, Na2HPO4 / 0 °C 11: 95 percent / 95percent ethanol / pyridinium p-toluenesulphonate / 40 °C 12: irradiation followed by thermal isomerization View Scheme

1: 1.) n-BuLi / 1.) hexane, THF, -70 deg C, 30 min, 2.) THF, -70 deg C, 90 min 2: 76 percent / AG-50WX4(resin) / methanol / 16 h / Ambient temperature View Scheme

1: 100 percent / pyridinium dichromate, pyridinium p-toluenesulfonate / CH2Cl2 / 24 h / Ambient temperature 2: 1.) n-BuLi / 1.) hexane, THF, -70 deg C, 30 min, 2.) THF, -70 deg C, 90 min 3: 76 percent / AG-50WX4(resin) / methanol / 16 h / Ambient temperature View Scheme

1: 95 percent / (4-dimethylamino)pyridine (DMAP), pyridine / 0 °C 2: 1.) Cu2I2 / 1.) Et2O, 0 deg C, 30 min, 2.) Et2O, RT, 48 h 3: 100 percent / LiAlH4 / diethyl ether / 1 h / 0 °C 4: 100 percent / pyridinium dichromate, pyridinium p-toluenesulfonate / CH2Cl2 / 24 h / Ambient temperature 5: 1.) n-BuLi / 1.) hexane, THF, -70 deg C, 30 min, 2.) THF, -70 deg C, 90 min 6: 76 percent / AG-50WX4(resin) / methanol / 16 h / Ambient temperature View Scheme

1: 100 percent / LiAlH4 / diethyl ether / 1 h / 0 °C 2: 100 percent / pyridinium dichromate, pyridinium p-toluenesulfonate / CH2Cl2 / 24 h / Ambient temperature 3: 1.) n-BuLi / 1.) hexane, THF, -70 deg C, 30 min, 2.) THF, -70 deg C, 90 min 4: 76 percent / AG-50WX4(resin) / methanol / 16 h / Ambient temperature View Scheme

1: 1.) Cu2I2 / 1.) Et2O, 0 deg C, 30 min, 2.) Et2O, RT, 48 h 2: 100 percent / LiAlH4 / diethyl ether / 1 h / 0 °C 3: 100 percent / pyridinium dichromate, pyridinium p-toluenesulfonate / CH2Cl2 / 24 h / Ambient temperature 4: 1.) n-BuLi / 1.) hexane, THF, -70 deg C, 30 min, 2.) THF, -70 deg C, 90 min 5: 76 percent / AG-50WX4(resin) / methanol / 16 h / Ambient temperature View Scheme

1: 1) lithium diisopropylamide / 1) THF, -78 deg C 2: 52 percent / 5percent Na-Hg, Na2HPO4 / 0 °C 3: 95 percent / 95percent ethanol / pyridinium p-toluenesulphonate / 40 °C 4: irradiation followed by thermal isomerization View Scheme

1: 95 percent / 95percent ethanol / pyridinium p-toluenesulphonate / 40 °C 2: irradiation followed by thermal isomerization View Scheme

1: 52 percent / 5percent Na-Hg, Na2HPO4 / 0 °C 2: 95 percent / 95percent ethanol / pyridinium p-toluenesulphonate / 40 °C 3: irradiation followed by thermal isomerization View Scheme

1: 1) lithium diisopropylamide / 1) THF, -78 deg C 2: 52 percent / 5percent Na-Hg, Na2HPO4 / 0 °C 3: 95 percent / 95percent ethanol / pyridinium p-toluenesulphonate / 40 °C 4: irradiation followed by thermal isomerization View Scheme