反应详情

A mixture of methyl 2-fluoro-4-(oxoacetyl)benzoate (6.0 g, 0.028 mol), ethyl orthoformate (12.0 mL, 0.071 mol), and p-toluenesulfonic acid monohydrate (200 mg) in toluene (60 mL) was heated under reflux for 4 h. After cooling, the reaction mixture was concentrated under reduced pressure to give the desired product which was used in the next step without further purification.

1. temperaturewas heated
2. temperatureunder reflux for 4 h
3. temperatureAfter cooling
4. concentrationthe reaction mixture was concentrated under reduced pressure