3-(Trifluoromethyl)aniline → 2-[4-(4-ethoxy-6-oxo-1H-pyridin-3-yl)-2-fluorophenyl]-N-[3-(trifluoromethyl)phenyl]acetamide

Participants

Reaction Steps

A solution of 2-(4-(4-ethoxy-6-oxo-1,6-dihydropyridin-3-yl)-2-fluorophenyl)acetic acid (80 mg, 0.275 mmol), 3-(trifluoromethyl)aniline (44.3 mg, 0.275 mmol), HATU (125 mg, 0.330 mmol) and DIEA (0.048 mL, 0.275 mmol) in DMF (10 mL) was stirred at rt for 5 h. After LCMS analysis showed the starting material had disappeared, the reaction mixture was concentrated under reduced pressure. The residue was dissolved in DCM and washed with H2O and brine. The organic layer was evaporated to dryness to give crude product which was purified by preparative HPLC to give pure product 2-(4-(4-ethoxy-6-oxo-1,6-dihydropyridin-3-yl)-2-fluorophenyl)-N-(3-(trifluoromethyl)phenyl)acetamide (14.56 mg, 0.032 mmol, 12% yield) as a yellow solid. 1H NMR (400 MHz, CD3OD): δ 8.03 (br. s., 1H), 7.77 (d, J=8.2 Hz, 1H), 7.69 (s, 1H), 7.51 (t, J=8.0 Hz, 1H), 7.46-7.36 (m, 2H), 7.31-7.24 (m, 2H), 6.28 (s, 1H), 4.24-4.19 (m, 2H), 3.84 (s, 2H), 1.41 (t, J=6.8 Hz, 3H); ES-LCMS: m/z 435.1 (M+H).

Provenance & Evidence