反应详情

A 25 mL microwave tube containing N-(2-bromopyridin-4-yl)-2,6-dichlorobenzamide (100 mg, 0.29 mmol), 3-fluoropyridin-2-amine (42 mg, 0.38 mmol), Pd2(dba)3 (8 mg, 0.008 mmol), Cs2CO3 (190 mg, 0.58 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (Xantphos, 4 mg, 0.003 mmol), and dioxane (15 mL) was degassed and then charged by N2 (3×). The resulting mixture was then irradiated in a microwave reactor at 130° C. for 30 min. The mixture was diluted with dioxane (20 mL) and filtered through Celite. The filtrate was concentrated under reduced pressure and the residue was purified by reverse-phase HPLC (Gemini, 200 mm×25 mm, gradient: CH3CN/0.05% NH3.H2O, 50-80%, 10 min) to afford the desired product (377 mg, yield: 45%). 1H NMR (400 MHz, DMSO) δ 11.07 (s, 1H), 8.98 (s, 1H), 8.28-8.01 (m, 3H), 7.70-7.48 (m, 4H), 7.37 (s, 1H), 7.01 (s, 1H). LCMS (ESI) m/z: 378.5 [M+H+].

1. customwas degassed
2. additioncharged by N2 (3×)
3. customThe resulting mixture was then irradiated in a microwave reactor at 130° C. for 30 min
4. additionThe mixture was diluted with dioxane (20 mL)
5. filtrationfiltered through Celite
6. concentrationThe filtrate was concentrated under reduced pressure
7. customthe residue was purified by reverse-phase HPLC (Gemini, 200 mm×25 mm, gradient: CH3CN/0.05% NH3.H2O, 50-80%, 10 min)