反应详情

温度

80 °C

A stirred mixture of 1-(5-tert-butylisoxazol-3-yl)-3-(3-(7-hydroxy-6-methoxyquinazolin-4-yloxy)phenyl)urea from Example 95B (160 mg, 0.356 mmol), (R)-(−)-epichlorohydrin (65 mg, 0.702 mmol), cesium carbonate (120 mg, 0.356 mmol) and potassium iodide (40 mg, 0.241 mmol) in dry N,N-dimethylformamide (4 mL) was heated in a sealed vial at 80° C. in a Biotage microwave synthesizer for 90 mins. After cooling to room temperature, the mixture was partitioned between water (50 mL) and a mixture of ethyl acetate (40 mL) and tetrahydrofuran (10 mL). The organic layer was separated, washed with brine (50 mL), dried over MgSO4 and concentrated under reduced pressure. Purification via silica gel chromatography eluting with 100% dichloromethane to 5% methanol in dichloromethane to afford (R)-1-(5-tert-butylisoxazol-3-yl)-3-(3-(6-methoxy-7-(oxiran-2-ylmethoxy)quinazolin-4-yloxy)phenyl)urea as a colorless solid (27 mg, 15%). LC-MS (ESI) m/z 506 (M+H)+.

1. temperatureAfter cooling to room temperature
2. customthe mixture was partitioned between water (50 mL)
3. additiona mixture of ethyl acetate (40 mL) and tetrahydrofuran (10 mL)
4. customThe organic layer was separated
5. washwashed with brine (50 mL)
6. dry with materialdried over MgSO4
7. concentrationconcentrated under reduced pressure
8. customPurification via silica gel chromatography
9. washeluting with 100% dichloromethane to 5% methanol in dichloromethane