Potassium Carbonate → Tert-butyl [3-(3-amino-4-nitrophenoxy)phenyl]carbamate

Participants

Reaction Conditions

Reaction Steps

To a solution of tert-butyl (3-hydroxyphenyl)carbamate (6.89 g, 32.9 mmol) and 5-fluoro-2-nitroaniline (5.09 g, 32.6 mmol) in N,N-dimethylformamide (100 mL) was added potassium carbonate (11.2 g, 80.9 mmol), and the mixture was vigorously stirred at 100° C. for 14 hr. The reaction mixture was cooled to room temperature, diluted with ethyl acetate (125 ml) and hexane (125 mL), washed with water (150 mL×2) and saturated brine (100 mL), successively, and dried over anhydrous magnesium sulfate. The insoluble material was filtered off, and the filtrate was concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography (ethyl acetate/hexane=2/98→30/70) to give the title compound (7.7 g, 69%) as a yellow solid.

Provenance & Evidence