potassium dichromate; sulfuric acid in water 1 h; cooling;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '508906', constants.ctx, '0')">1,8-diazabicyclo[5.4.0]undec-7-ene</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '741857', constants.ctx, '0')">acetonitrile</a> <br />24&nbsp;h;&nbsp;&nbsp;Ambient temperature;&nbsp;<br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3587155', constants.ctx, '0')">water</a> <br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: TBAF / tetrahydrofuran / 1.) -78 deg C, 1 h, 2.) room temperature, 2 h<br />2: TBAF / tetrahydrofuran / 0.5 h / 0 &deg;C<br /> <br /> &nbsp;