oxygen; tetra-n-butylammonium acetate; palladium diacetate; potassium carbonate; copper(ll) bromide; iron(II) chloride T=130°C; P=760.051 Torr; 24 h;

tetrabutylammomium bromide; copper diacetate; palladium diacetate; potassium carbonate T=130°C; 24 h;