A solution of (Z)-{4-[3-(4-iodo-phenyl)-3-phenyl-allyloxy]-2-methyl-phenoxy}-acetic acid methyl ester (283 mg, 0.55 mmol), 2-Ethynyl-pyridine (0.167 ml, 1.65 mmol), bis(triphenylphosphine) palladium(II) chloride (0.015 g, 0.022 mmol), copper(I) iodide (0.31 mg, 0.002 mmol) in dry triethylamine (4 ml) were heated to 120° C. by microwave irradiation for 20 min. The cooled reaction mixture was added dichloromethane (20 ml) and silica gel Fluka 60 (10 g) and evaporated in vacuo. The residue was purified by ISCO combiflash 16 (silica gel, hexane/ethyl acetate 85:15) yielding {2-Methyl-4-[(Z)-3-phenyl-3-(4-pyridin-2-ylethynyl-phenyl)-allyloxy]-phenoxy}-acetic acid methyl ester as a yellow solid.
