1: 51 percent / Sn, HCl aq. / 4 h / 50 °C 2: 37 percent / pyridine / 0.5 h / Ambient temperature View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: SOCl₂ / 1 h / Heating<br />2: Et₃N / CH₂Cl₂ / 0.25 h / Ambient temperature<br /> <br /> &nbsp;