Potassium Phosphate, Tribasic → Methyl 3-(isopropyl(methyl)amino)-2-(3-methoxyphenyl)quinoxaline-6-carboxylate

Participants

Reaction Conditions

Reaction Steps

Into a 10-mL sealed tube, was placed methyl 2-chloro-3-(isopropyl(methyl)amino)quinoxaline-6-carboxylate (120 mg, 0.41 mmol, 1.00 equiv), 3-methoxyphenylboronic acid (188 mg, 1.23 mmol, 3.00 equiv), Pd(PPh3)4 (94 mg, 0.08 mmol, 0.20 equiv), K3PO4 (346 mg, 1.64 mmol, 4.00 equiv), 1,4-dioxane (4 mL). The resulting solution was stirred for overnight at 100° C. in an oil bath. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1:30). This resulted in 50 mg (33%) of methyl 3-(isopropyl(methyl)amino)-2-(3-methoxyphenyl)quinoxaline-6-carboxylate as a yellow solid.

Provenance & Evidence