Carbon–carbon bond formation by reaction of an alkyne with ruthenium(II) complexes. Crystal structure of [RuCl(η3-Ph2P–CH(CPhCH)–C(But)O](p-cymene)]PF6

Abstract

[RuCl(η²-Ph₂PCRC(R′)O(η⁶-arene)] complexes, prepared from α-diphenylphosphinoketones, react with phenylacetylene in the presence of AgBF₄ or AgPF₆ and give regioselective carbon–carbon bond formation involving the α-phosphino carbon atom of the phosphinoenolate ligand, as shown by an X-ray diffraction analysis.