Diisopropylethylamine → 2-(4-(1-(2,5-Difluorophenyl)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 (0.44 g, 1.34 mmol), 1-(2,5-difluorophenyl)propan-2-amine (0.27 g, 1.61 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 bown solid product, 0.38 g, 61.3% yield. MS: 461.9 [M−H]−. 1H NMR (DMSO-d6, 500 MHz): δ 13.40 (s, 1H), 11.31 (s, 1H), 10.92 (d, 1H, J=8.0 Hz), 8.13 (s, 1H), 8.00 (s, 1H), 7.42-7.37 (m, 2H), 7.20-7.18 (m, 1H), 7.09-7.04 (m, 1H), 6.18 (d, 1H, J=8.0 Hz), 4.19-4.14 (m, 1H), 3.06 (s, 3H), 3.04-2.98 (m, 2H), 1.33 (d, 3H, J=6.0 Hz).

Provenance & Evidence