3-Aminobenzoic Acid → N-[2,3-Dimethoxy-7-nitro-quinoxalin-5-ylmethyl]-3-amino-benzoic acid

Participants

Reaction Steps

350 mg (1.06 mmol) of 5-bromomethyl-2,3-dimethoxy-7-nitro-quinoxaline, 153 mg (1.05 equiv.) of 3-aminobenzoic acid and 0.165 ml (1.1 equiv.) of triethylamine are combined in 10 ml of acetonitrile, and heated at boiling at reflux for 24 hours. The reacton mixture is concentrated by evaporation, extracted with ethyl acetate and 1 N HCl and washed once with brine. The organic phases are combined, dried over magnesium sulfate and concentrated by evaporation.

Provenance & Evidence