O1[CH:6]=[CH:5][C:4](=[O:7])[CH:3]=[CH:2]1.Cl.[F:9][C:10]([F:14])([F:13])[CH2:11][NH2:12]>N1C=CC=CC=1>[F:9][C:10]([F:14])([F:13])[CH2:11][N:12]1[CH:6]=[CH:5][C:4](=[O:7])[CH:3]=[CH:2]11 g (10.4 mmol) of 4H-pyran-4-on was dissolved in 10 ml of pyridine, 3.38 g (25 mmol) of 2,2,2-trifluoroethylamine hydrochloride was added, and reacted at 70° C. for an hour. The solvent was removed, and the residue was purified by chloroform-methanol (10:1) silica gel chromatograph to obtain 1.7 g of the title compound.
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