4-Methoxy-o-phenylenediamine → HCID 491324, compound

Participants

Reaction Steps

A mixture of 4-methoxybenzene-1,2-diamine (2.00 g, 14.5 mmol) and ethyl trifluoropyruvate (2.47 g, 14.5 mmol) in absolute EtOH (30 mL) was refluxed overnight. The mixture was cooled to room temperature and diluted with EtOAc (300 mL), washed with water (100 mL×2), dried over Na2SO4 and concentrated in vacuo. The residue was purified by column chromatography on silica gel to give 6-methoxy-3-(trifluoromethyl)quinoxalin-2(1H)-one (1.50 g, yield 42%) as solid (also obtained 7-methoxy-3-(trifluoromethyl)quinoxalin-2(1H)-one (600 mg, yield 17%)).

Provenance & Evidence