反应详情

Concentrated sulfuric acid (5 ml) was added to a methanol (1300 ml) solution of 2-fluoro-4-nitrobenzoic acid (140 g), and heated under reflux for 48 hours. The solvent was evaporated away under reduced pressure, water was added to it, and the formed solid was taken out through filtration. After dried under reduced pressure, the entitled compound was obtained as a yellow solid.

1. temperatureheated
2. temperatureunder reflux for 48 hours
3. customThe solvent was evaporated away under reduced pressure, water
4. additionwas added to it
5. filtrationthe formed solid was taken out through filtration
6. customAfter dried under reduced pressure
7. customthe entitled compound was obtained as a yellow solid