1: 47 percent / molecular sieves (4 Angstroem) / tetrahydrothiophene 1,1-dioxide / 72 h / 130 °C / Heating 2: 44 percent / MnO2 / Ambient temperature 3: acetic acid / hydrogenation View Scheme

1: 44 percent / MnO2 / Ambient temperature 2: acetic acid / hydrogenation View Scheme

in acetic acid hydrogenation;