ammonium cerium(IV) nitrate in water; acetonitrile T=0°C; Oxidation; 0.5 h;

With  borane in  tetrahydrofuran 1 h;  Heating;   

Multi-step reaction with 3 steps 1: CH2Cl2 2: 82 percent / H2 / Ni/Ra / ethanol; acetic anhydride / 120 h / 2068.6 Torr3: 55 percent / BH3 / tetrahydrofuran / 1 h / Heating  

Multi-step reaction with 2 steps 1: 82 percent / H2 / Ni/Ra / ethanol; acetic anhydride / 120 h / 2068.6 Torr2: 55 percent / BH3 / tetrahydrofuran / 1 h / Heating