反应详情

This compound was prepared via the general DCC/pyr coupling procedure from 8 (0.3690 g, 1.4801 mmol), 2-nitro-4,5-dichlorophenylacetic acid (0.7301 g, 2.920 mmol), DCC(0.6213 g, 3.01 mmol), and pyridine (0.24 mL, 3.01 mmol). The crude product was converted to the HCl salt with Et2O—HCl without chromatography and crystallized from MeOH to yield 13 HCl.(0.3232 g, 42%): m.p. (HCl salt) 165° C. (dec); 1H NMR (HCl salt, DMSO-d6) δ2.0 (br s, 4H, —CH2CH2—), 2.93 (s, 3H, —NCH3), 3.1-4.3 (complex, 6H, 3 —CH2—), 4.4 (s, 2H, benzylic methylene), 6.2 (m, 1H, —CH—), 7.7-7.8 (m, 2H, aromatic), 7.9 (s, 1H, aromatic), 8.14 (s, 1H, aromatic), 8.27 (d, J=7.7 Hz, 1H, aromatic), 8.43 (s, 1H, aromatic). MS(FAB) m/z 481. Anal. (C, H, N) C21H22N4O5Cl2 .HCl.0.5MeOH.

1. customcrystallized from MeOH