Dowex 50 in methanol T=55°C; 10 h;

<b>Multi-step reaction with 2 steps<br /> </b>1: 38 percent / K₂CO₃ / acetone / 2 h / Ambient temperature<br />2: 2 percent / K₂CO₃ / methanol / 3 h / Ambient temperature<br /> <br /> &nbsp;