反应详情

温度

80 °C

8-Methoxy-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile (Compound A5-2, 50 mg, 0.158 mmol) was dissolved in CH3CN (1 mL), added with NBS (56 mg, 2 eq.), and stirred at 80° C. overnight. The reaction solution was added to water, and then extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over sodium sulfate. The drying agent was removed by filtration and the residues obtained after concentration under reduced pressure were added with MeOH and the solid remained after dissolution was filtered to obtain the target compound (yellow powder, 20 mg, 38%).

1. extractionextracted with ethyl acetate
2. washThe organic layer was washed with saturated brine
3. dry with materialdried over sodium sulfate
4. customThe drying agent was removed by filtration
5. customthe residues obtained
6. concentrationafter concentration under reduced pressure
7. additionwere added with MeOH
8. dissolutionafter dissolution
9. filtrationwas filtered
10. customto obtain the target compound (yellow powder, 20 mg, 38%)