methanol; sodium hydroxide T=20°C; 3 h;

1: zinc(II) chloride / 2 h / 100 °C 2: pyridine / 4 h / 115 °C 3: potassium carbonate / acetone / 1 h / |Reflux 4: sodium acetate / 20 h / |Reflux 5: sodium hydroxide; methanol / 3 h / 20 °C View Scheme

1: pyridine / 4 h / 115 °C 2: potassium carbonate / acetone / 1 h / |Reflux 3: sodium acetate / 20 h / |Reflux 4: sodium hydroxide; methanol / 3 h / 20 °C View Scheme

1: potassium carbonate / acetone / 1 h / |Reflux 2: sodium acetate / 20 h / |Reflux 3: sodium hydroxide; methanol / 3 h / 20 °C View Scheme

1: sodium acetate / 20 h / |Reflux 2: sodium hydroxide; methanol / 3 h / 20 °C View Scheme