1: 1.) BH3, 2.) 6 N NaOH, H2O2 / 1.) THF, room temperature, 2 h, 2.) EtOH, H2O, 55 deg C, 1.5 h 2: 97 percent / molecular sieves, NMO, TPAP / CH2Cl2 / 1 h View Scheme