AgCl in dichloromethane 6 h; Ambient temperature;

<b>Multi-step reaction with 2 steps<br /> </b>1: 1.) n-BuLi / 1.) hexane, Et₂O, pentane, THF, 4 h, -110 deg C; 2.) THF, r.t.<br />2: 91 percent / BI₃ / pentane / 0.5 h / Ambient temperature<br /> <br /> &nbsp;