Potassium Phosphate, Tribasic → Methyl 3-(isopropyl(methyl)amino)-2-(pyridin-4-yl)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 (150 mg, 0.51 mmol, 1.00 equiv), pyridin-4-ylboronic acid (124.5 mg, 1.02 mmol, 1.99 equiv), Pd(PPh3)4 (59 mg, 0.05 mmol, 0.10 equiv), K3PO4 (433 mg, 2.04 mmol), 1,4-dioxane (4 mL). The resulting solution was stirred for overnight at 50° C. in an oil bath under nitrogen atmosphere. The resulting mixture was concentrated under vacuum. The residue was purified by silica gel column chromatography with EA/PE (1:40). This resulted in 50 mg (29%) of methyl 3-(isopropyl(methyl)amino)-2-(pyridin-4-yl)quinoxaline-6-carboxylate as a yellow solid.

Provenance & Evidence