1: 86 percent / K2CO3 / acetone / Heating 2: 7.08 g / H2 / PtO2 / ethanol / 1.5 h / 2068.6 Torr / Ambient temperature 3: 83 percent / 2 h / 90 °C 4: 36 percent / pyridinium p-toluenesulfonate / pyridine / 84 h / Heating View Scheme

1: 7.08 g / H2 / PtO2 / ethanol / 1.5 h / 2068.6 Torr / Ambient temperature 2: 83 percent / 2 h / 90 °C 3: 36 percent / pyridinium p-toluenesulfonate / pyridine / 84 h / Heating View Scheme

pyridinium p-toluenesulfonate in pyridine 84 h; Heating;

1: 83 percent / 2 h / 90 °C 2: 36 percent / pyridinium p-toluenesulfonate / pyridine / 84 h / Heating View Scheme