反应详情

温度

60 °C

To a solution of 2′-acetyl-3-chloro-4-hydroxy-5′-methyl-[1,4′]bipyridinyl-2-one of part D (500 mg, 1.7 mmol) in N,N-dimethylformamide (3 mL) was added 2-chloromethyl-3,5-difluoro-pyridine (277 mg, 1.7 mmol), potassium carbonate (590 mg, 4.28 mmol) and 18-crown-6 (10 mg) and the reaction was stirred at 60° C. for 4 h. After cooling the solution was partitioned between ethyl acetate and water. The organic layer was washed with water and brine and dried over magnesium sulfate. The solution was filtered and concentrated in vacuo. The crude material was purified using normal phase chromatography (ethyl acetate/heptane) to provide alkylated product as a yellow solid (397 mg): MS (ES) m/e 420 (M+H).

1. temperatureAfter cooling the solution
2. customwas partitioned between ethyl acetate and water
3. washThe organic layer was washed with water and brine
4. dry with materialdried over magnesium sulfate
5. filtrationThe solution was filtered
6. concentrationconcentrated in vacuo
7. customThe crude material was purified