反应详情

5-(5-Methyl-1H-1,2,4-triazol-3-yl)-3-(4-(trifluoromethoxy)phenyl)-1,2,4-oxadiazole (200 mg, 0.643 mmol) was placed in DMF (5 ml) and Cs2CO3 (251 mg, 0.771 mmol) was added. The reaction was stirred for 5 min and 2-chloro-4-(chloromethyl)pyrimidine (126 mg, 0.771 mmol) was added. The reaction was stirred at 45° C. overnight and then partitioned between H2O (50 mL) and EtOAc (50 mL). The organic layer was separated, washed with H2O (2×50 mL) and brine (30 mL), dried over Na2SO4, filtered, and concentrated to afford the crude product which was purified by silica gel chromatography (EtOAc/Hexane 10%-100% EtOAc) to afford the desired compound as an orange solid (193 mg, 68%). MS (ES+) C17H11ClF3N7O2 requires: 437, 439. found 438, 440 [M+H]+; 1H NMR (600 MHz, DMSO-d6) δ 8.81 (d, J=5.1 Hz, 1H), 8.21 (d, J=8.7 Hz, 2H), 7.61 (d, J=8.7 Hz, 2H), 7.52 (d, J=5.1 Hz, 1H), 5.81 (s, 2H), 2.59 (s, 3H).

1. stirringThe reaction was stirred at 45° C. overnight
2. custompartitioned between H2O (50 mL) and EtOAc (50 mL)
3. customThe organic layer was separated
4. washwashed with H2O (2×50 mL) and brine (30 mL)
5. dry with materialdried over Na2SO4
6. filtrationfiltered
7. concentrationconcentrated
8. customto afford the crude product which
9. customwas purified by silica gel chromatography (EtOAc/Hexane 10%-100% EtOAc)