1: 73 percent / NiCl2(dppe) / diethyl ether / 22 h / 40 °C 2: 81 percent / BBr3 / CH2Cl2 / 0.5 h / -78 °C View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 43 percent / K₂CO₃ / dimethylformamide / 12 h / 45 &deg;C<br />2: 98 percent / pyridine / 0.5 h<br /> <br /> &nbsp;