反应详情

温度

90 °C

6-Chloro-7-methoxy-1,1-dimethyl-3,4-dihydro-1H-naphthalen-2-one (Compound I1-1, 4.45 g, 16.5 mmol) and 3-hydrazinobenzonitrile (2.63 g, 1.2 eq.) were dissolved in TFA (91 mL), and stirred at 90° C. for 3 hours. According to the concentration under reduced pressure, TFA was removed and the residues were added with saturated aqueous solution of NaHCO3, followed by extraction with ethyl acetate. The organic layer was washed with 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 ethyl acetate. After stirring at room temperature, the precipitated solid was separated by filtration. The filtrate was concentrated under reduced pressure to obtain the target compound as a mixture with 11-3 (red powder, 6.46 g).

1. concentrationAccording to the concentration under reduced pressure, TFA
2. customwas removed
3. additionthe residues were added with saturated aqueous solution of NaHCO3
4. extractionfollowed by extraction with ethyl acetate
5. washThe organic layer was washed with brine
6. dry with materialdried over sodium sulfate
7. customThe drying agent was removed by filtration
8. customthe residues obtained
9. concentrationafter concentration under reduced pressure
10. additionwere added with ethyl acetate
11. stirringAfter stirring at room temperature
12. customthe precipitated solid was separated by filtration
13. concentrationThe filtrate was concentrated under reduced pressure
14. customto obtain the target compound as a mixture with 11-3 (red powder, 6.46 g)