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