manganese(IV) oxide; sodium carbonate 1) CHCl3, 50 deg C, 60 min 2) ether, r.t., 90 min; Multistep reaction;

&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1731042', constants.ctx, '0')">chloroform</a> <br />T=-78&deg;C;&nbsp;0.5&nbsp;h;&nbsp;<br /> &nbsp;