1: With potassium carbonate; palladium diacetate; 2-Ph2P-2'-(Me2N)biphenyl in N,N-dimethyl acetamide T=135°C; 16 h; 2: With 2,3-dicyano-5,6-dichloro-p-benzoquinone in toluene 16 h; Heating; Further stages. Title compound not separated from byproducts.;