sulfuric acid in water; glycerol 2 h; Heating; Yield given. Yields of byproduct given;

<b>Multi-step reaction with 3 steps<br /> </b>1: sodium carbonate / acetonitrile / 1.) r.t., 14 h: 2.) reflux, 1 h<br />2: 65.2 percent / BF₃*Et₂O / 3 h / 150 &deg;C<br />3: 64.8 percent / sodium carbonate / acetonitrile<br /> <br /> &nbsp;

<b>Multi-step reaction with 3 steps<br /> </b>1: sodium carbonate / acetonitrile / 1.) r.t., 14 h: 2.) reflux, 1 h<br />2: 65.2 percent / BF₃*Et₂O / 3 h / 150 &deg;C<br />3: 64.8 percent / sodium carbonate / acetonitrile<br /> <br /> &nbsp;