反应详情

A mixture of 2,3-diamino-4-benzyloxytoluene (5.0 g) and benzaldehyde (5.52 g, 2 mol. equiv.) in xylene (75 ml) was heated under reflux for 3 h, and then left for 18 h at room temperature. The resulting crystalline product was filtered, washed with ether, and recrystallized from ethanol to afford the title compound, 4.13 g, m.p. 221°-224° C.

1. temperaturewas heated
2. temperatureunder reflux for 3 h
3. filtrationThe resulting crystalline product was filtered
4. washwashed with ether
5. customrecrystallized from ethanol