1: 88 percent / B2H6 / tetrahydrofuran / 2 h / ice cooling 2: 82 percent / pyridinium chlorochromate, NaOAc / CH2Cl2 / 44 h / Ambient temperature 3: 93 percent / p-TsOH / benzene / 16 h / Heating 4: 98 percent / 1percent HCl / tetrahydrofuran / 1.5 h / Heating 5: 83 percent / diethyl ether / 2 h / -10 °C 6: 84 percent / pyridinium chlorochromate, NaOAc / CH2Cl2 / 8 h / Ambient temperature 7: 85 percent / 10percent HCl / tetrahydrofuran / 44 h / Heating 8: 74 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: 80 percent / 1percent HCl / tetrahydrofuran / 1 h / Heating 2: 93 percent / Jones reagent / acetone / 2 h / ice cooling 3: 87 percent / anhyd. K2CO3 / ethanol / 2.5 h / Heating 4: 37 percent / LiAlH4 / diethyl ether / 1.) r.t., 5 h, 2.) reflux, 4 h View Scheme

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

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