ammonium formate; palladium on activated charcoal in ethanol 4 h; Heating;

1: 35 percent / t-BuOK / 1,2-dimethoxy-ethane; ethanol / 10 h / 50 °C 2: 80.4 percent / HCl(gas), H2O / 14 h / Heating 3: ammonium formate / 10percent Pd/C / ethanol / 4 h / Heating View Scheme

1: 33 percent / H2O / 14 h / pH 5 2: 35 percent / t-BuOK / 1,2-dimethoxy-ethane; ethanol / 10 h / 50 °C 3: 80.4 percent / HCl(gas), H2O / 14 h / Heating 4: ammonium formate / 10percent Pd/C / ethanol / 4 h / Heating View Scheme