反应详情

A mixture of methyl 3-[(methylsulfonyl)amino]-5-nitrobenzoate obtained in Reference Example 88.22 g (30 mmol), methyl iodide 2.0 mL (32 mmol), potassium carbonate 10.4 g (75 mmol) and acetone (250 mL) was stirred at room temperature for 16 hours. The mixture was filtered to remove the precipitates and the solvent was evaporated. To the residue was added water (150 mL) and the mixture was extracted twice with ethyl acetate (100 mL). After drying of the mixture on magnesium sulfate, the solvent was evaporated to give 8.55 g (29.7 mmol) of the title compound (yield: 99%).

1. filtrationThe mixture was filtered
2. customto remove the
3. customprecipitates
4. customthe solvent was evaporated
5. additionTo the residue was added water (150 mL)
6. extractionthe mixture was extracted twice with ethyl acetate (100 mL)
7. customAfter drying of the mixture on magnesium sulfate
8. customthe solvent was evaporated