sodium tetrahydroborate in methanol 0.166667 h;

1: 3percent aq. benzyl(trimethyl)ammonium hydroxyde / methanol / 0.5 h / Ambient temperature 2: NaBH4 View Scheme

1: 80 percent / hydrogen, aq. conc. HCl / PtO2 / ethanol / 24 h / 2280 Torr 2: 97 percent / KHCO3 / methanol / 96 h 3: 64 percent / NaH, 4 Angstroem molecular sieves / dimethylformamide / 1.5 h / 20 °C 4: O3 / CH2Cl2; methanol / 1 h 5: methanol / 0.67 h / Heating 6: <<(C6H5)3P>Cu>BH4 / CHCl3 / 4 h / Heating View Scheme

1: 80 percent / hydrogen, aq. conc. HCl / PtO2 / ethanol / 24 h / 2280 Torr 2: 97 percent / KHCO3 / methanol / 96 h 3: 64 percent / NaH, 4 Angstroem molecular sieves / dimethylformamide / 1.5 h / 20 °C 4: O3 / CH2Cl2; methanol / 1 h View Scheme