反应详情

A solution of N-chlorosuccinimide (0.153 g, 1.145 mmol) in DMF (1 mL) was treated with acetaldoxime (0.068 g, 1.145 mmol), stirred at RT for 30 min, then added to a solution of N-(5-((2-ethynylpyridin-4-yl)oxy)-6-methylpyridin-2-yl)acetamide (0.102 g, 0.382 mmol) and TEA (0.5 mL) in DMF (1 mL) and heated at 60° C. for 1 h. The mixture was cooled to RT, treated with H2O, extracted with EtOAc (2×) and the combined organics were washed with H2O, then brine, dried over Na2SO4, concentrated to dryness and purified via silica gel chromatography (MeOH/DCM) to afford N-(6-methyl-5-((2-(3-methylisoxazol-5-yl)pyridin-4-yl)oxy)pyridin-2-yl)acetamide (110 mg, 89%) as a white solid. 1H NMR (400 MHz, DMSO-d6): δ 10.64 (s, 1 H), 8.55 (d, J=5.7 Hz, 1 H), 8.03 (d, J=8.8 Hz, 1 H), 7.64 (d, J=8.8 Hz, 1 H), 7.35 (d, J=2.5 Hz, 1 H), 6.96 (m, 2 H), 2.28 (s, 3 H), 2.25 (s, 3 H), 2.08 (s, 3 H); MS (ESI) m/z: 325.1 (M+H+).

1. temperatureheated at 60° C. for 1 h
2. temperatureThe mixture was cooled to RT
3. extractionextracted with EtOAc (2×)
4. washthe combined organics were washed with H2O
5. dry with materialbrine, dried over Na2SO4
6. concentrationconcentrated to dryness
7. custompurified via silica gel chromatography (MeOH/DCM)