2: B2H6, H2O2 3: Jones reagent 4: SOCl2 5: 83 percent / diethyl ether / 1.) 0 deg C, 1 h; 2.) r.t., overnight 6: 83 percent / CuSO4 / toluene / 30 h / Heating 7: LiAlH4 8: pyridine 9: 60 percent / potassium t-butoxide / dimethylsulfoxide / Ambient temperature View Scheme