HCID 15457194, compound → HCID 18408351, compound

Participants

Reaction Conditions

Reaction Steps

0.29 g (0.74 mmol) of 3-(2-carboxy-7-chloro-5-fluorobenzofuran-4-yl)-1-methyl-6-trifluoromethyl-2-(1H)-pyridone was dissolved in 15 ml of quinoline, and 0.05 g (0.75 mmol) of copper powder was added thereto, followed by stirring at 210° C. for 15 minutes. Then, copper was removed by filtration, and the filtrate was poured into water and acidified by an addition of hydrochloric acid, and then extracted with ethyl acetate. After washing with water, the organic layer was dried over anhydrous magnesium sulfate. Ethyl acetate was distilled off under reduced pressure. Then, the obtained residue was purified by silica gel column chromatography to obtain 0.18 g (yield: 70%) of the desired product. Melting point: 178-179° C. 1H-NMR (300 MHz, CDCl3) δ value: 3.74(3H,s), 6.66(1H,d), 6.81(1H,d), 7.20(1H,d), 7.56(1H,d), 7.72(1H,d)ppm.

Provenance & Evidence