potassium acetate; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in dimethyl sulfoxide T=90°C;

1: sodium t-butanolate / 2,2'-bis-(diphenylphosphino)-1,1'- binaphthyl; tris-(dibenzylideneacetone)dipalladium(0) / toluene / 80 °C 2: potassium acetate / (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride / dimethyl sulfoxide / 90 °C View Scheme

1: isopropyl alcohol; water / 48 h / Reflux 2: potassium acetate / (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride / 1,4-dioxane / 3 h / Inert atmosphere; Reflux View Scheme