2-Phenylethylamine hydrochloride → Methyl 3-(phenethylamino)-2-phenylquinoxaline-6-carboxylate

Participants

Reaction Conditions

Reaction Steps

Into a 10-mL sealed tube, was placed methyl 3-bromo-2-phenylquinoxaline-6-carboxylate (150 mg, 0.44 mmol, 1.00 equiv), 2-phenylethanamine hydrochloride (207.8 mg, 1.32 mmol, 3.00 equiv), potassium carbonate (304.4 mg, 2.21 mmol, 5.00 equiv), N,N-dimethylformamide (2 mL). The resulting solution was stirred overnight at 100° C. in an oil bath. The reaction was then quenched by the addition of 20 mL of water. The resulting solution was extracted with 3×50 mL of ethyl acetate and the organic layers combined. The organic layer was dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1:50). This resulted in 120 mg (71%) of methyl 3-(phenethylamino)-2-phenylquinoxaline-6-carboxylate as a yellow solid.

Provenance & Evidence