caesium carbonate; tris-(dibenzylideneacetone)dipalladium(0); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene in 1,4-dioxane 24 h; Inert atmosphereReflux;

4-(N,N-dimethlyamino)pyridine; triethylamine in dichloromethane T=0 - 20°C;

1: [Cp*RhCl2]2; silver hexafluoroantimonate; copper diacetate / 1,2-dichloro-ethane / 36 h / 120 °C / |Schlenk technique; |Inert atmosphere 2: palladium 10 on activated carbon; hydrogen / methanol / 20 °C / 760.05 Torr 3: hydrogenchloride / water / 6 h / 80 °C View Scheme