Ammonium Hydroxide → 7-[(2,5-Dioxopyrrolidin-1-yl)methyl]-8-fluoro-4-(4-fluorophenyl)quinoline-2-carboxamide

Participants

Reaction Steps

TEA (105 μl, 0.757 mmol) was added to a solution of 7-[(2,5-dioxopyrrolidin-1-yl)methyl]-8-fluoro-4-(4-fluorophenyl)quinoline-2-carboxylic acid 7-12 (100 mg, 0.252 mmol) and HATU (96 mg, 0.252 mmol) in DMF (1262 μl). Ammonium Hydroxide (50.5 μl, 0.757 mmol) was added and the reaction stirred for 15 min at rt. The reaction was quenched with aqueous sodium hydrogen carbonate (saturated) and the mixture was extracted with ethyl acetate (×3). The combined organic fractions were dried (MgSO4), filtered and the solvent was evaporated under reduced pressure. The residue was purified by column chromatography on a silica gel column, eluting with EtOAc/hexane (0-100%) to afford 7-[(2,5-dioxopyrrolidin-1-yl)methyl]-8-fluoro-4-(4-fluorophenyl)quinoline-2-carboxamide 7-13 (63 mg, 63% yield) as a white solid, LCMS shows the compound is 100% pure 1H NMR (500 MHz, CDCl3): δ 8.28 (1H, s), 8.14 (1H, s), 7.68 (1H, d, J=8.85 Hz), 7.54 (1H, dd, J=8.86, 6.65 Hz), 7.50-7.46 (2H, m), 7.25-7.20 (2H, m), 5.69 (1H, s), 4.99 (2H, s), 2.78 (4H, s). LRMS m/z (M+H)+ 396.2 found, 396.1 required.

Provenance & Evidence