phosphorus pentachloride in diethyl ether 2 h; Heating;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '10773376', constants.ctx, '0')">chromium(VI) oxide</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '2037554', constants.ctx, '0')">sulfuric acid</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1696894', constants.ctx, '0')">diethyl ether</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '635680', constants.ctx, '0')">acetone</a> <br />0.0833333&nbsp;h;&nbsp;<br /> &nbsp;