Diisopropylethylamine → 2-(4-(1-(2,3,5,6-Tetrafluorophenyl)propan-2-ylamino)-2-oxo-1,2-dihydropyridin-3-yl)-6-methylimidazo[4,5-f]isoindole-5,7(1H,6H)-dione

Participants

Reaction Steps

2-(4-Chloro-2-oxo-1,2-dihydropyridin-3-yl)-6-methylimidazo[4,5-f]isoindole-5,7(1H,6H)-dione (0.58 g, 1.75 mmol), 1-(2,3,5,6-tetrafluorophenyl)propan-2-amine (0.36 g, 1.75 mmol), n-butanol (30 mL) and N,N-diisopropylethylamine (5 mL) were mixed together in a flask. The reaction mixture was stirred and heated to reflux overnight under argon. Solvents were removed under reduced pressure. The residue solid was purified by column chromatography (silica-gel, CH2Cl2/MeOH=9/1 v/v) to give a yellow solid product, 0.66 g, 75.9% yield. MS: 497.8 [M−H]−. 1H NMR (DMSO-d6, 500 MHz): δ 13.44 (s, 1H), 10.90 (d, 1H, J=7.0 Hz), 8.12 (s, 1H), 7.93-7.90 (m, 2H), 7.73-7.71 (m, 1H), 7.40 (d, 1H, J=7.0 Hz), 6.16 (d, 1H, J=7.5 Hz), 4.23 (m, 1H), 3.38 (m, 2H), 3.05 (s, 3H), 1.38 (d, 3H, J=6.0 Hz).

Provenance & Evidence