反应详情

Ethyl 4-[(4-methoxyphenyl)amino]-6-(methylcarbamoyl)quinoline-3-carboxylate (0.2 g) was stirred with LiOH (85.5 mg) in 6 mL of MeOH:THF:H2O (2:2:2) overnight. The reaction mixture was concentrated and the aqueous layer was washed with ethyl acetate. The aqueous layers were collected and acidified with aqueous HCl and the precipitate formed was filtered and dried to give 0.142 g (60%) of 4-[(4-methoxyphenyl)amino]-6-(methylcarbamoyl)-quinoline-3-carboxylic acid. 1H NMR (300 MHz, CD3OD) δ 9.05 (s, 1H, aromatic), 8.20 (s, 1H, aromatic), 8.12-7.81 (m, 2H, aromatic), 7.27 (d, 2H, J=9.9 Hz, aromatic), 7.06 (d, 2H, J=9.9 Hz, aromatic), 3.88 (s, 1H, —OCH3), 2.82 (s, 3H, —NCH3); LC-MS (m/z) 352.0 (M+1).

1. concentrationThe reaction mixture was concentrated
2. washthe aqueous layer was washed with ethyl acetate
3. customThe aqueous layers were collected
4. customthe precipitate formed
5. filtrationwas filtered
6. customdried