1: bis(dibenzylideneacetone)-palladium(0); copper(l) iodide; triphenylphosphine; lithium chloride / N,N-dimethyl-formamide / 11 h / 100 °C / |Darkness 2: bis(dibenzylideneacetone)-palladium(0); tri-tert-butyl phosphine; potassium hydroxide / tetrahydrofuran; water / 24 h / 60 °C View Scheme