1.1: iodomethane / 120 °C 2.1: potassium carbonate / methanol; diethyl ether 3.1: tetrabutylammonium fluoride / tetrahydrofuran / 20 °C 3.2: copper(I) iodide; bis(dibenzylideneacetone)palladium(0); triphenylphosphine / triethylamine View Scheme