acetic anhydride; triethylamine; bis-triphenylphosphine-palladium(II) chloride in benzene T=170°C; P=51485.6 Torr; 1.5 h;

bis-triphenylphosphine-palladium(II) chloride; triethylamine in benzene T=170°C; P=53200 Torr; 1.5 h;