反应详情

Methyl 3-chloro-5-cyano-4-methoxybenzoate (1.02 g) was dissolved in tetrahydrofuran (15 mL) and water (6 mL), and lithium hydroxide monohydrate (759 mg) was added to the solution, and then the mixture was stirred at room temperature for 90 minutes. The organic solvent was distilled off and the aqueous layer was washed with n-hexane. The aqueous layer was acidified with 1N hydrochloric acid and then extracted with ethyl acetate. The organic layer was washed with saturated brine, and then dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure to obtain the title compound (946 mg) as a colorless crystal.

1. distillationThe organic solvent was distilled off
2. washthe aqueous layer was washed with n-hexane
3. extractionextracted with ethyl acetate
4. washThe organic layer was washed with saturated brine
5. dry with materialdried over anhydrous sodium sulfate
6. distillationThe solvent was distilled off under reduced pressure