3-Methoxy-2-pyridone → HCID 59586725, compound

Participants

Reaction Conditions

Reaction Steps

302 mg (2.41 mmol) of 3-methoxypyridone are dissolved in 8.2 ml of anhydrous dimethyl sulfoxide and admixed with 325 mg (2.89 mmol) of potassium tert-butoxide. After 30 min, 500 mg (2.41 mmol) of 2-(difluoromethoxy)-1-fluoro-4-nitrobenzene are added and the mixture is heated to 80° C. for 20 h. The reaction solution is diluted with dichloromethane and washed with water and 1N hydrochloric acid. After the organic phase has been dried over sodium sulfate, it is filtered and concentrated to dryness under reduced pressure. The residue is dissolved in dimethyl sulfoxide and purified by preparative HPLC with a water/acetonitrile gradient. The product fractions are combined and concentrated to dryness under reduced pressure. This affords 207 mg (28% of theory) of the desired product.

Provenance & Evidence