反应详情

To (E)-3-(4-(1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazol-3-yl)phenyl)but-2-enoic acid (C28) (1.14 g, 2.93 mmol) in isopropanol (9.8 mL) was added triethylamine (0.53 mL, 3.81 mmol) and diphenyl phosphorazidate (0.68 mL, 3.23 mmol). The reaction was stirred at room temperature overnight. The white precipitate was vacuum-filtered and dried in a vacuum oven to afford the title compound as a white solid (0.978 g, 80%): 1H NMR (400 MHz, CDCl3) δ 8.59 (s, 1H), 8.25-8.19 (m, 2H), 7.85-7.78 (m, 2H), 7.65-7.58 (m, 2H), 7.44-7.37 (m, 2H), 6.16 (d, J=1.3 Hz, 1H), 2.68 (d, J=1.2 Hz, 3H); 19F NMR (376 MHz, CDCl3) δ −58.02; ESIMS m/z 387 ([M+H]+) (isocyanate).

1. filtrationThe white precipitate was vacuum-filtered
2. customdried in a vacuum oven