1: 96 percent / 1.) anhydr. aluminium bromide; 2.) 2percent HCl / acetonitrile / 1.) 2 h; 2.) 70 - 80 deg C, 20 min 2: 83 percent / anhydr. potassium carbonate / methanol / 2 h / Heating View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 95 percent / anhydr. potassium carbonate / acetone / Heating<br />2: 1.) anhydr. AlBr₃; 2.) 2percent HCl; 3.) anhydr. K₂CO₃ / 1.) acetonitrile, rt., 2 h; 2.) 70-80 deg C, 15-20 min; 3.) acetone, reflux<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 95 percent / anhydr. potassium carbonate / acetone / Heating<br />2: 1.) anhydr. AlBr₃; 2.) 2percent HCl; 3.) anhydr. K₂CO₃ / 1.) acetonitrile, rt., 2 h; 2.) 70-80 deg C, 15-20 min; 3.) acetone, reflux<br /> <br /> &nbsp;