potassium carbonate; tetrakis(triphenylphosphine) palladium(0) in ethylene glycol dimethyl ether; water T=85 - 90°C; 12 h; Heating / reflux;

palladium diacetate; caesium carbonate; triphenylphosphine in 1-methyl-pyrrolidin-2-one T=90°C; 15 h; Molecular sieveInert atmosphere; regioselective reaction;