反应详情

温度

60 °C

A solution of 7-(4-chlorophenyl)-8-(pyridin-4-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one (3.0 g, 9.27 mmol), prepared as described in Example 244, K2CO3 (2.56 g, 18.53 mmol) and 5-(4-(bromomethyl)phenyl)isoxazole (2.65 g, 11.12 mmol), in DMF (23 mL), were added. The resulting mixture was heated to 60° C. After 2 h, the reaction mixture was cooled to RT and partitioned between water and EtOAc. The organic layer was separated and the aqueous layer was extracted with EtOAc (2×200 mL). The combined organic extracts were dried over magnesium sulfate, filtered and concentrated. The residue was purified by silica gel column chromatography using hexanes/EtOAc 1:10 to give the title compound, 2-(4-(isoxazol-5-yl)benzyl)-7-(4-chlorophenyl)-8-(pyridin-4-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3(2H)-one, as a light yellow solid. HPLC RT: 2.64 min; MS, M+H=481; 1H NMR (CDCl3): δ 8.62-8.64 (m, 2H), 8.29 (d, J=1.8 Hz, 1H), 8.20 (s, 1H), 7.77 (d, J=8.4 Hz, 2H), 7.51 (d, J=8.4 Hz, 2H), 7.33 (d, J=8.4 Hz, 2H), 7.22 (m, 2H), 7.09 (d, J=8.4 Hz, 2H), 6.51 (d, J=1.6 Hz, 1H), 5.25 (s, 2H).

1. additionwere added
2. temperaturethe reaction mixture was cooled to RT
3. custompartitioned between water and EtOAc
4. customThe organic layer was separated
5. extractionthe aqueous layer was extracted with EtOAc (2×200 mL)
6. dry with materialThe combined organic extracts were dried over magnesium sulfate
7. filtrationfiltered
8. concentrationconcentrated
9. customThe residue was purified by silica gel column chromatography