bromine; sodium methylate; potassium acetate in tetrachloromethane; ethanol 2) reflux, 1h;

<b>Multi-step reaction with 2 steps<br /> </b>1: 8 percent / LiBr, Li₂CO₃ / DMF, reflux, 0.5h<br />2: 90.4 percent / C₂H₅ONa / ethanol / 3 h / Ambient temperature<br /> <br /> &nbsp;