Diisopropylethylamine → Methyl 3-(4-(4-methoxyphenyl)piperidin-1-yl)-2-phenylquinoxaline-6-carboxylate

Participants

Reaction Conditions

Reaction Steps

A solution of methyl 3-chloro-2-phenylquinoxaline-6-carboxylate (150 mg, 0.50 mmol, 1.00 equiv), 4-(4-methoxyphenyl)piperidine (191 mg, 1.00 mmol, 2.00 equiv), and DIEA (194.8 mg, 1.51 mmol, 5.00 equiv) in DMF (4 mL) was placed in an 8-mL sealed tube and stirred overnight at 100° C. in an oil bath. The reaction was then quenched by the addition of water, and the resulting mixture was concentrated under vacuum. Purification via silica gel column (ethyl acetate/petroleum ether (1:50)) yielded 179.6 mg (63%) of methyl 3-(4-(4-methoxyphenyl)piperidin-1-yl)-2-phenylquinoxaline-6-carboxylate as a yellow solid.

Provenance & Evidence