C. Clemencinleguillou et al., REARRANGEMENT OF AN N-ARYL-2-VINYLTETRAHYDRO-4-OXOQUINOLINE TO AN ACRIDINE DERIVATIVE, Heterocycles, 48(4), 1998, pp. 687-693
Acridine (4) has been obtained by acidic rearrangement of N-aryl-2-vin
yltetrahydro-4-oxoquinoline (2). The mechanism involved a retro-Michae
l process followed by the attack of the electron rich aromatic ring on
to the keto group.