反应详情

Triethylamine (0.6 g, 6 mmol) was added to a stirred suspension of 4-(aminomethyl)-2-(2,6-dioxo(3-piperidyl))isoindoline-1,3-dione hydrochloride (0.8 g, 2.5 mmol) in THF (70 ml). After stirring for 5 min, chloroacetyl chloride (0.34 g, 3 mmol) was added and the resulting mixture was heated at reflux for 3 hours. The solvent was removed in vacuo and the residue was dissolved in dichloromethane (70 ml), washed with water (20 ml), 2N HCl (30 ml), water (2×30 ml), brine (30 ml) and dried. Solvent was removed in vacuo and the resulting solid was slurried in dichloromethane (10 ml) and ether (10 ml) and filtered to give 0.76 g (84%) of the product: 1H NMR (DMSO-d6) δ 11.15 (s, 1H), 8.87 (t, J=5.9 Hz, 1H), 7.88-7.68 (m, 3H), 5.19-5.12 (dd, J=5.3 and 12.6 Hz, 1H), 4.77 (d, J=5.9 Hz, 2H), 4.19 (s, 2H), 2.96-2.83 (m, 1H), 2.65-2.51 (m, 2H), 2.11-2.04 (m, 1H); 13C NMR (DMSO-d6) δ 172.88, 169.90, 167.53, 167.01, 166.67, 138.46, 134.90, 133.22, 131.63, 127.26, 122.14, 48.94, 42.61, 38.27, 30.99, 22.05.

1. temperaturethe resulting mixture was heated
2. temperatureat reflux for 3 hours
3. customThe solvent was removed in vacuo
4. dissolutionthe residue was dissolved in dichloromethane (70 ml)
5. washwashed with water (20 ml), 2N HCl (30 ml), water (2×30 ml), brine (30 ml)
6. customdried
7. customSolvent was removed in vacuo
8. filtrationether (10 ml) and filtered