Water → HCID 15457042, compound

Participants

Reaction Steps

20 g (47 mol) of 5-(4-chloro-2-fluoro-5-isopropoxyphenyl)-3-ethoxycarbonyl-2-trifluoromethyl-4(1H)-pyridone was dissolved in 150 ml of DMF, and 2.1 g (53 mmol) of 60% sodium hydride was added thereto under cooling with ice, followed by stirring at room temperature for 15 minutes. Then, 14 g (99 mmol) of methyl iodide was added thereto. After stirring at room temperature for 8 hours, the reaction solution was poured into water and 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, and then, the obtained residue was purified by silica gel column chromatography to obtain 6 g (yield: 28%) of the desired product. Melting point: 170-172° C.

Provenance & Evidence