lithium aluminium tetrahydride in diethyl ether 1.) r.t., 5 h, 2.) reflux, 4 h;

1: 56 percent / diethyl ether / 0.67 h / -5 °C 2: 81 percent / Hg(OAc)2 / 60 h / 200 °C / in a sealed tube 3: 77 percent / diethyl ether / 1 h / -5 °C 4: 68 percent / pyridinium chlorochromate, NaOAc / CH2Cl2 / 9 h / Ambient temperature 5: 81 percent / p-TsOH / benzene / 8 h / Heating 6: 89 percent / B2H6 / tetrahydrofuran / 8 h / ice cooling 7: 80 percent / 1percent HCl / tetrahydrofuran / 1 h / Heating 8: 93 percent / Jones reagent / acetone / 2 h / ice cooling 9: 87 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 10: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme

1: 81 percent / Hg(OAc)2 / 60 h / 200 °C / in a sealed tube 2: 77 percent / diethyl ether / 1 h / -5 °C 3: 68 percent / pyridinium chlorochromate, NaOAc / CH2Cl2 / 9 h / Ambient temperature 4: 81 percent / p-TsOH / benzene / 8 h / Heating 5: 89 percent / B2H6 / tetrahydrofuran / 8 h / ice cooling 6: 80 percent / 1percent HCl / tetrahydrofuran / 1 h / Heating 7: 93 percent / Jones reagent / acetone / 2 h / ice cooling 8: 87 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 9: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme

1: 77 percent / diethyl ether / 1 h / -5 °C 2: 68 percent / pyridinium chlorochromate, NaOAc / CH2Cl2 / 9 h / Ambient temperature 3: 81 percent / p-TsOH / benzene / 8 h / Heating 4: 89 percent / B2H6 / tetrahydrofuran / 8 h / ice cooling 5: 80 percent / 1percent HCl / tetrahydrofuran / 1 h / Heating 6: 93 percent / Jones reagent / acetone / 2 h / ice cooling 7: 87 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 8: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme

1: 68 percent / pyridinium chlorochromate, NaOAc / CH2Cl2 / 9 h / Ambient temperature 2: 81 percent / p-TsOH / benzene / 8 h / Heating 3: 89 percent / B2H6 / tetrahydrofuran / 8 h / ice cooling 4: 80 percent / 1percent HCl / tetrahydrofuran / 1 h / Heating 5: 93 percent / Jones reagent / acetone / 2 h / ice cooling 6: 87 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 7: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme

1: 93 percent / Jones reagent / acetone / 2 h / ice cooling 2: 87 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 3: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme

1: 81 percent / p-TsOH / benzene / 8 h / Heating 2: 89 percent / B2H6 / tetrahydrofuran / 8 h / ice cooling 3: 80 percent / 1percent HCl / tetrahydrofuran / 1 h / Heating 4: 93 percent / Jones reagent / acetone / 2 h / ice cooling 5: 87 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 6: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme

1: 82 percent / pyridinium chlorochromate, NaOAc / CH2Cl2 / 44 h / Ambient temperature 2: 93 percent / p-TsOH / benzene / 16 h / Heating 3: 98 percent / 1percent HCl / tetrahydrofuran / 1.5 h / Heating 4: 83 percent / diethyl ether / 2 h / -10 °C 5: 84 percent / pyridinium chlorochromate, NaOAc / CH2Cl2 / 8 h / Ambient temperature 6: 85 percent / 10percent HCl / tetrahydrofuran / 44 h / Heating 7: 74 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 8: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme

1: 83 percent / diethyl ether / 2 h / -10 °C 2: 84 percent / pyridinium chlorochromate, NaOAc / CH2Cl2 / 8 h / Ambient temperature 3: 85 percent / 10percent HCl / tetrahydrofuran / 44 h / Heating 4: 74 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 5: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme

1: 89 percent / B2H6 / tetrahydrofuran / 8 h / ice cooling 2: 80 percent / 1percent HCl / tetrahydrofuran / 1 h / Heating 3: 93 percent / Jones reagent / acetone / 2 h / ice cooling 4: 87 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 5: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme