1.1: n-butyllithium / tetrahydrofuran; hexanes; diethyl ether / 0.33 h / -78 °C 1.2: 2.5 h / -78 - 20 °C 2.1: 2BF4(1-)*C27H26P2Pd(2+)*2H2O / 1,2-dichloro-ethane / 12 h / 80 °C View Scheme

1.1: n-butyllithium / tetrahydrofuran; hexanes; diethyl ether / 0.33 h / -78 °C 1.2: 2.5 h / -78 - 20 °C 2.1: 2CF3O3S(1-)*C27H26P2Pd(2+)*2H2O / 1,4-dioxane / 0.5 h / 80 °C View Scheme

<b>Multi-step reaction with 2 steps<br /> </b>1: acetone / 4 h / Reflux<br />2: toluene-4-sulfonic acid / benzene / Reflux<br /> <br /> &nbsp;