Cp*Rh(OTf)2; copper diacetate; potassium carbonate; 4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-4',4',5',5'-tetramethyl-1,3,2-dioxaborolane in o-xylene T=130°C; 24 h; Inert atmosphere;

(i) BCl3, (ii) AlCl3; Multistep reaction;