反应详情

Treat a suspension of 1-(3,3-dimethylbutyl)-3-(2-fluoro-4-methyl-5-(7-methyl-2-(methylthio)pyrido[2,3-d]pyrimidin-6-yl)phenyl)urea (0.248 g, 0.562 mmol) in DCM (20 mL) with 70 wt % mCPBA (0.208 g, 0.842 mmol) and stir the mixture at RT for 2 h. Add ammonia (0.5N in dioxane, 8.99 mL, 4.49 mmol) and stir the mixture at RT overnight. Add additional ammonia (7N in MeOH, 5 mL, 35 mmol) and stir at RT overnight. Concentrate the mixture to dryness, treat with saturated. Na2CO3 and extract with DCM (4×). Dry the combined organics over MgSO4, concentrate to dryness and purify via silica gel chromatography (50-100% EtOAc/Hex, then 0-10% MeOH/EtOAc) to afford the title compound as an off-white solid (57 mg, 24%). MS (m/z): 411.2 (M+1).

1. additionTreat
2. stirringstir at RT overnight
3. concentrationConcentrate the mixture to dryness
4. additiontreat with saturated
5. extractionNa2CO3 and extract with DCM (4×)
6. dry with materialDry the combined organics over MgSO4
7. concentrationconcentrate to dryness
8. custompurify via silica gel chromatography (50-100% EtOAc/Hex