1: (Ce(NH4)2(NO3)6) / acetonitrile; H2O / 0 °C 2: Na2S2O4 / acetone / 25 °C View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '2349612', constants.ctx, '0')">boron trifluoride diethyl etherate</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '102551', constants.ctx, '0')">1,4-dioxane</a> <br />T=20&deg;C;&nbsp;20&nbsp;h;&nbsp;<br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 95 percent / PBr₃ / diethyl ether / -20 &deg;C<br />2: 75 percent / Na / diethyl ether / 48 h / 36 &deg;C<br /> <br /> &nbsp;