Potassium Carbonate → HCID 66810384, compound

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Reaction Steps

To a solution of 3-cyano-4-fluoronitrobenzene (9.36 g, 56.3 mmol) and 3-amino-4-fluorophenol (7.16 g, 56.3 mmol) in N,N-dimethylformamide (150 ml) was added potassium carbonate (11.7 g, 84.5 mmol), and the mixture was stirred at room temperature for 4 hr. Insoluble material was filtered off, and the filtrate was concentrated under reduced pressure. 5% Aqueous sodium hydrogen carbonate solution (300 mL) was added to the residue, and the mixture was extracted with ethyl acetate (270 mL)/tetrahydrofuran (30 mL). The aqueous layer was extracted with ethyl acetate (270 mL)/tetrahydrofuran (30 mL), and the combined organic layer was washed with saturated brine (300 mL), and dried over anhydrous sodium sulfate. Insoluble material was filtered off, and the filtrate was purified by basic silica gel column chromatography (eluate: ethyl acetate). The obtained solution was concentrated under reduced pressure to give the title compound (15.6 g, quantitative) as a beige powder.

Provenance & Evidence