1: 78.6 percent / DIBAH / hexane; benzene / 1 h / 0 °C 2: D-(-)-diethyltartrate, titanium tetraisopropoxide, molecular sieves 4A, tert-butylhydroperoxide / CH2Cl2 / 3 h / -20 °C 3: 2.3 mg / H2 / PtO2 / ethanol / 1 h / Ambient temperature View Scheme