1.1: (1,2,3,4,5-pentaphenylferrocen-1'-yl)-di-tert-butylphosphine; bis(dibenzylideneacetone)-palladium(0) / tetrahydrofuran / 20 °C / Inert atmosphere 2.1: sodium hydroxide / ethanol; water / 1 h / Reflux 3.1: methanesulfonic acid / 1 h / 50 °C 4.1: pyridine / dichloromethane / 0.17 h / 20 °C 4.2: -78 - 20 °C 5.1: copper(l) iodide; bis-triphenylphosphine-palladium(II) chloride; triethylamine / N,N-dimethyl-formamide / 2 h / 20 °C / Inert atmosphere 6.1: methanol; potassium carbonate / tetrahydrofuran / 1 h / 20 °C 7.1: platinum (II) chloride / toluene / 80 °C View Scheme