反应详情

A mixture of isatoic anhydride (4.9 g, 30 mmol) and p-anisidine (3.7 g, 30 mmol) in toluene (60 mL) was heated to reflux for 5 h. After cooling, the supernatant was decanted and the solid was suspended in methylene chloride (500 mL). The resulting suspension was filtered. The filtrate was combined with the supernatant from above, partially concentrated, diluted with hexane, and decolorized with charcoal. The resulting crystallization provided 5.3 g (73%) of the title compound as a white solid;

1. temperaturewas heated
2. temperatureto reflux for 5 h
3. temperatureAfter cooling
4. customthe supernatant was decanted
5. filtrationThe resulting suspension was filtered
6. concentrationpartially concentrated
7. additiondiluted with hexane
8. customThe resulting crystallization