4-MeO-dppp; cesium fluoride; [Rh(μ-Cl)(2,5-norbornadiene)]2 in 1,4-dioxane T=60°C;

potassium tert-butylate; copper(l) chloride; 1,3-bis(2,6-diisopropylphenyl)imidazolinium chloride in tetrahydrofuran T=70°C; P=760.051 Torr; 24 h;