1.1: magnesium / tetrahydrofuran 1.2: 61 percent / zinc(II) bromide / tetrahydrofuran / 20 °C 2.1: 77 percent / manganese(IV) oxide / CH2Cl2 / 4 h / Heating 3.1: 4.32 g / baker's yeast; D-glucose; tap water / XAD 1180 resin / ethanol / 48 h / 20 °C View Scheme

sodium tetrahydroborate in methanol T=0°C; 0.166667 h; Inert atmosphere;

hydrogen; palladium 10 on activated carbon in methanol T=20°C; 24 h;