Ammonium Chloride → Methyl 2-(3,4-diaminophenyl)-3-(isopropyl(methyl)amino)quinoxaline-6-carboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of methyl 2-(4-amino-3-nitrophenyl)-3-(isopropyl(methyl)amino)quinoxaline-6-carboxylate (900 mg, 2.28 mmol) in methanol (40 mL) was added iron (1.28 g, 22.8 mmol) and NH4Cl (1.81 g, 34.2 mmol). After stirring for 6 h at 60° C., the solids were filtered out. The filtrate was concentrated under vacuum to give a residue which was dissolved in water (200 mL), extracted with dichloromethane (3×50 mL), dried over anhydrous sodium sulfate and concentrated under vacuum to afford methyl 2-(3,4-diaminophenyl)-3-(isopropyl(methyl)amino)quinoxaline-6-carboxylate as yellow solid (635 mg, crude).

Provenance & Evidence