1: 1.) disiamylborane, 2.) acetic acid, 3.) 33percent H2O2, NaOH / 1.) THF, -5 deg C, 5 h, 2.) 60 deg C, 12 h, 3.) 40 deg C, H2O, 40 deg C, 40 min 2: 98.2 percent / PPTS / ethanol / 3 h / 55 °C View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: 91 percent / PPTS<br />2: 1.) (diethylamino)trimethylstannane / 2.) (MeCN)2PdCl₂ / 1.) RT, 17 h, 2.) DMF, RT, 40 min<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 91 percent / PPTS<br />2: 1.) (diethylamino)trimethylstannane / 2.) (MeCN)2PdCl₂ / 1.) RT, 17 h, 2.) DMF, RT, 40 min<br /> <br /> &nbsp;