hydrogen; palladium on activated charcoal in acetic acid Ambient temperature;

1: 47 percent / ethanol / 16 h / Ambient temperature 2: 95 percent / 37 percent aq. HCl, zinc powder / ethanol / 1 h 3: 71 percent / CHCl3 / 5 h / Heating 4: 51 percent / EtONa / ethanol / 3 h / Heating 5: 62 percent / hydrogen / 10 percent Pd/C / acetic acid / Ambient temperature View Scheme

1: 47 percent / ethanol / 16 h / Ambient temperature 2: 95 percent / 37 percent aq. HCl, zinc powder / ethanol / 1 h 3: 71 percent / CHCl3 / 5 h / Heating 4: 51 percent / EtONa / ethanol / 3 h / Heating 5: 62 percent / hydrogen / 10 percent Pd/C / acetic acid / Ambient temperature View Scheme

1: 71 percent / CHCl3 / 5 h / Heating 2: 51 percent / EtONa / ethanol / 3 h / Heating 3: 62 percent / hydrogen / 10 percent Pd/C / acetic acid / Ambient temperature View Scheme

1: 95 percent / 37 percent aq. HCl, zinc powder / ethanol / 1 h 2: 71 percent / CHCl3 / 5 h / Heating 3: 51 percent / EtONa / ethanol / 3 h / Heating 4: 62 percent / hydrogen / 10 percent Pd/C / acetic acid / Ambient temperature View Scheme

1: 51 percent / EtONa / ethanol / 3 h / Heating 2: 62 percent / hydrogen / 10 percent Pd/C / acetic acid / Ambient temperature View Scheme