potassium fluoride in ethylene glycol dimethyl ether T=0°C; 2.5 h;

potassium fluoride; copper(l) iodide; triethylamine; bis-triphenylphosphine-palladium(II) chloride; 18-crown-6 ether 1.) 100 deg C, 72 h; 2.) glyme, 10 min; Yield given. Multistep reaction;