1,2-Difluoro-3-nitrobenzene → 2-fluoro-N-(4-methoxybutyl)-6-nitroaniline

Participants

Reaction Conditions

Reaction Steps

To a solution of 1,2-difluoro-3-nitrobenzene (5.15 g) and 4-methoxybutan-1-amine hydrochloride (5.42 g) in acetonitrile (100 ml) was added diisopropylethylamine (17 μl), and the mixture was stirred at 6° C. for 12 hr. 4-Methoxybutan-1-amine hydrochloride (1.00 g) was further added, and the mixture was stirred at 70° C. for 5 hr. The reaction mixture was concentrated under reduced pressure, saturated aqueous sodium hydrogen carbonate was added, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was subjected to silica gel column chromatography, and a fraction eluted with hexane-ethyl acetate-hexane (3:7) was concentrated under reduced pressure to give the object product (7.70 g).

Provenance & Evidence