反应详情

To 3-amino-2-methylphenol (5.0 g, 41 mmol) in refluxing 6N HCl (100 mL) was added dropwise (E)-but-2-enal (5.7 g, 81 mmol) and the reaction was heated to reflux for 2 hours. After cooling, the reaction was neutralized with ammonium hydroxide and extracted with DCM. The combined organic phases were dried over MgSO4, filtered and concentrated under reduced pressure to yield 2,8-dimethylquinolin-7-ol (9.0 g, 51% yield) as a brown solid.

1. temperaturethe reaction was heated
2. temperatureto reflux for 2 hours
3. temperatureAfter cooling
4. extractionextracted with DCM
5. dry with materialThe combined organic phases were dried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated under reduced pressure