1: 73 percent / KI; NaH2PO2; AcOH / 1 h / Heating 2: 91 percent / Pd(OAc)2; Nu4NHSO4; K2CO3 / dimethylformamide / 24 h / 120 °C 3: 84 percent / BBr3 / CH2Cl2 / 20 °C View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 48 percent / tetrahydrofuran / 12 h / 20 &deg;C<br />2: 85 percent / hexane; tetrahydrofuran / 20 &deg;C<br /> <br /> &nbsp;