tetrabutyl ammonium fluoride in tetrahydrofuran T=20°C; 3 h;

<b>Multi-step reaction with 2 steps<br /> </b>1: triethylamine / dichloromethane / 2 h / 0 - 20 &deg;C<br />2: water; tetrahydrofuran / 3 h / 65 &deg;C<br /> <br /> &nbsp;