triethylsilane; trifluoroacetic acid T=70°C; 1 h;

<b>Multi-step reaction with 2 steps<br /> </b>1.1: NaOH / acetone / 20 &deg;C<br />1.2: 77 percent / SOCl₂ / 6 h / Heating<br />2.1: 23 percent / AlCl₃ / CH₂Cl₂ / 6 h / Heating<br /> <br /> &nbsp;