反应详情

4-Methoxyisoindoline (4.4 g, 29.53 mmol) in 48% aqueous hydrobromic acid (50 ml) was stirred and held at reflux for 16 hours. Upon cooling to room temperature the solvent was removed in vacuo to afford 4-hydroxyisoindoline hydrobromide (5.0 g, 78%) as a pale orange solid. 1H NMR (DMSO-d6) 9.95 (1H, br s), 9.37 (2H, br s), 7.19 (1H, t), 6.84 (1H, d), 6.80 (1H, d), 4.48 (2H, t), 4.40 (2H, t). MS: [M+H]+ 136.

1. temperatureat reflux for 16 hours
2. customwas removed in vacuo