Diisopropylethylamine → Methyl 3-(4-fluorophenyl)-2-(4-(4-(trifluoromethyl)phenyl)piperidin-1-yl)quinoxaline-6-carboxylate

Participants

Reaction Conditions

Reaction Steps

Into a 20-mL sealed tube, was placed a solution of 4-(4-(trifluoromethyl)phenyl)piperidine (420 mg, 1.83 mmol, 3.00 equiv), methyl 2-chloro-3-(4-fluorophenyl)quinoxaline-6-carboxylate (150 mg, 0.47 mmol, 1.00 equiv), DIEA (305 mg, 2.36 mmol, 5.00 equiv) in N,N-dimethylformamide (10 mL). The resulting solution was stirred 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 (1:10). This resulted in 200 mg (83%) of methyl 3-(4-fluorophenyl)-2-(4-(4-(trifluoromethyl)phenyl)piperidin-1-yl)quinoxaline-6-carboxylate as a yellow solid.

Provenance & Evidence