Wilkinson's catalyst in 1,4-dioxane T=135°C; 1 h; Inert atmosphere;

<b>Multi-step reaction with 2 steps<br /> </b>1.1: potassium carbonate; tetrakis(triphenylphosphine) palladium⁽⁰⁾ / benzene; water; ethanol / 20 h / 100 &deg;C / |Inert atmosphere<br />2.1: tert.-butyl lithium / tetrahydrofuran; hexane / 2 h / -78 &deg;C / |Inert atmosphere; |Schlenk technique<br />2.2: -78 - 20 &deg;C / |Saturated gas; |Schlenk technique<br /> <br /> &nbsp;