反应详情

To a solution of N-{3-[(Z)-2-(2-chloro-4-pyrimidinyl)-1-hydroxyethenyl]phenyl}-2,5-difluorobenzenesulfonamide (1.0 g, 2.4 mmol) in 25 mL DMA, NBS (0.420 g, 2.4 mmol) was added and the solution was allowed to stir 15 minutes at rt. 2,2-Dimethylpropanethioamide (0.277 g, 2.359 mmol) was then added and the reaction mixture was heated at 80° C. for 2 h. The reaction mixture was diluted with EtOAc and washed with water×3. The organic layer was dried over MgSO4 and filtered. The organic solution was evaporated onto silica gel and chromatographed. 0-50% EtOAc in DCM to give the title compound (1.01 g, 81% yield). ES-LCMS m/z 521.1 (M+H).

1. temperaturethe reaction mixture was heated at 80° C. for 2 h
2. washwashed with water×3
3. dry with materialThe organic layer was dried over MgSO4
4. filtrationfiltered
5. customThe organic solution was evaporated onto silica gel
6. customchromatographed