反应详情

To a stirred solution of 5.73 (21.6 mmoles) of 8-bromo-2-naphthoic acid, methyl ester (VIII) in 50.0 mL of ethanol was added 21.6 mL (216 mmoles) of 10N NaOH at room temperature. After 1 hour, an excess of 1N HCl was added. The precipitate was collected, washed with 1N HCl and air dried to give 5.40 g (yield: 99%) of 8-bromo-2-naphthoic acid; 1H-NMR: δ13.35 (bs, 1H), 8.80, (s, 1H), 8.11 (m, 3H), 7.98 (d, J=8.0 Hz, 1H), 7.59 (dd, J=7.2 Hz, 1H).

1. customThe precipitate was collected
2. washwashed with 1N HCl and air
3. customdried