1.1: formic acid / ethanol / 3 h / Reflux 1.2: 2 h / 40 °C / Reflux 2.1: methanol / Reflux 3.1: sodium carbonate / water; methanol / 3 h / 30 °C / pH 10 4.1: sodium hydroxide; water / methanol / 2 h / 40 - 45 °C 4.2: pH 3 / Acidic conditions View Scheme

1.1: formic acid / ethanol / 3 h / Reflux 1.2: 2 h / 40 °C / Reflux 2.1: methanol / Reflux 3.1: sodium carbonate / water; methanol / 3 h / 30 °C / pH 10 4.1: sodium hydroxide; water / methanol / 2 h / 40 - 45 °C 4.2: pH 3 / Acidic conditions 5.1: hydrogenchloride; water / ethyl acetate / 4 h / 20 °C View Scheme

With  ammonium acetate in  ethanol 7 h;  Reflux;   

Multi-step reaction with 3 steps 1.1: formic acid / ethanol / 3 h / Reflux1.2: 2 h / 40 °C / Reflux2.1: methanol / Reflux3.1: sodium carbonate / water; methanol / 3 h / 30 °C / pH 10