反应详情

To a solution of 8-nitrochroman-4-carboxylic acid (3.0 g) and 4-isopropylaniline (2.0 g) in dimethylformamide (30 mL) were added N-hydroxybenzotriazole hydrate (2.0 g) and 1-ethyl-3-(3′-dimethylaminopropyl)carbodiimide hydrochloride (2.8 g), and the mixture was stirred at room temperature. After the completion of the reaction, the reaction mixture was partitioned between water and ethyl acetate. The organic layer was washed with saturated brine and dried over magnesium sulfate. The solvent was evaporated, and the residue was purified by silica gel column chromatography to give N-(4-isopropylphenyl)-8-nitrochroman-4-carboxamide (4.1 g).

1. customAfter the completion of the reaction
2. customthe reaction mixture was partitioned between water and ethyl acetate
3. washThe organic layer was washed with saturated brine
4. dry with materialdried over magnesium sulfate
5. customThe solvent was evaporated
6. customthe residue was purified by silica gel column chromatography