反应详情

To a solution of 6-bromo-N-(4-chlorobenzyl)-3-hydroxypicolinamide (200 mg, 0.59 mmol) and Cs2CO3 (516 mg, 2.93 mmol) in DMF (5 mL) was added chloroiodomethane (382 mg, 1.17 mmol) dropwise at 100° C. for 10 minutes. The mixture was concentrated in vacuo and the residue was suspended in water. The mixture was extracted with EtOAc and the organic phase was washed with brine, dried over sodium sulfate and concentrated in vacuo to give the crude 6-bromo-3-(4-chlorobenzyl)-2H-pyrido[2,3-e][1,3]oxazin-4(3H)-one (150 mg, yield: 73%) without further purification. MS (M+H)+: 353/355.

1. concentrationThe mixture was concentrated in vacuo
2. extractionThe mixture was extracted with EtOAc
3. washthe organic phase was washed with brine
4. dry with materialdried over sodium sulfate
5. concentrationconcentrated in vacuo