反应详情

A mixture of 2-azido-N-{[2-(2,6-dioxo(3-piperidyl))-1,3-dioxoisoindolin-4-yl]methyl}acetamide (1.2 g, 3.24 mmol), and 10% Pd/C (0.15 g) in 4N HCl (20 ml) and CH3OH (50 ml) was hydrogenated in Parr shake apparatus, under 50 psi of hydrogen for 3 hours. The mixture was then filtered through celite and the filtrate was concentrated to a solid residue. The solid was slurried in ethanol (20 ml) and the suspension filtered to give 2-amino-N-{[2-(2,6-dioxo(3-piperidyl)) 1,3-dioxoisoindolin-4-yl]methyl}acetamide hydrochloride (0.86 g, 84%) as a white solid: mp 270-272° C.; 1H NMR (DMSO-d6) δ d 11.16 (s, 1H), 9.28 (t, J=5.7 Hz, 1H), 8.33 (s, 3H), 7.83 (s, 3H), 5.20-5.13 (dd, J=5.3 and 12.5 Hz, 1H), 4.81 (d, J=5.7 Hz, 2H), 3.69 (s, 2H), 2.92-2.87 (m, 1H), 2.65-2.51 (m, 2H), 2.09-2.05 (m, 1H); 13C NMR (DMSO-d6) δ d 172.76, 169.80, 167.44, 166.91, 166.52, 138.24, 134.74, 133.53, 131.51, 127.17, 122.08, 48.89, 37.89, 30.94, 21.99; Anal. Calcd. For C16H17N4O5Cl: C, 50.47; H, 4.50; N, 14.71; Cl, 9.31. Found: C, 50.39; H, 4.61; N, 14.42; Cl, 9.25.

1. filtrationThe mixture was then filtered through celite
2. concentrationthe filtrate was concentrated to a solid residue
3. filtrationthe suspension filtered