反应详情

A 4N HCl solution in dioxane (1 ml) was added to a stirred solution of 3-[(tert-butoxy)carbonylamino]-N-{[2-(2,6-dioxo(3-piperidyl))-1,3-dioxoisoindolin-4-yl]methyl}propanamide (0.5 g, 1.09 mmol) in CH2Cl2 (15 ml) and stirred for 17 hours. The resulting suspension was filtered to give 3-amino-N-{[2-(2,6-dioxo(3-piperidyl))-1,3-dioxoisoindolin-4-yl]methyl}propanamide hydrochloride (0.34 g, 79%) as a white solid: mp 161-163° C.; 1H NMR (DMSO-d6) δ d 11.15 (s, 1H), 8.88 (t, J=5.8, Hz, 1H), 8.06 (b, 3H), 7.87-7.79 (m, 3H), 5.19-5.12 (dd, J=5.3 and 12.6 Hz, 1H), 4.76 (d, J=5.8 Hz, 2H), 3.03-2.84 (m, 3H), 2.67-2.47 (m, 4H), 2.08-2.04 (m, 1H); 13C NMR (DMSO-d6) δ d 172.74, 169.88, 169.80, 167.45, 166.92, 138.92, 134.74, 133.46, 131.48, 127.09, 121.92, 48.86, 37.69, 35.11, 32.03, 30.92, 21.97; Anal. Calcd. For C17H19N4O5Cl+0.13 CH2Cl2+0.57 H2O: C, 49.44; H, 4.94; N, 13.46; Cl, 10.73. Found: C, 49.22; H, 4.88; N, 13.08; Cl, 10.95.

1. filtrationThe resulting suspension was filtered