Citric Acid → HCID 15457060, compound

Participants

Reaction Steps

2.8 g (7.7 mmol) of 3-(5-acetylthio-4-chloro-2-fluorophenyl)-1-methyl-6-trifluoromethyl-2(1H)-pyridone was dissolved in 30 ml of methanol, 8.5 ml (8.5 mmol) of a 1N sodium hydroxide aqueous solution was dropwise added thereto under cooling with ice After stirring at room temperature for 1 hour, the mixture was poured into water and acidified with citric acid and extracted with ethyl acetate. After washing with water and a saturated sodium chloride aqueous solution, the organic layer was dried over anhydrous magnesium sulfate. Ethyl acetate was distilled off under reduced pressure. Then, the obtained crude crystals were washed with n-hexane to obtain 2.4 g (yield: 93%) of the desired product. Melting point: 141-142° C.

Provenance & Evidence