F. Coullet et al., SYNTHESIS OF NEW SUBSTITUTED PYRROLO[2,3-B]-ACRIDINONE AND PYRROLO[3,2-A]ACRIDINONE DERIVATIVES, Synthetic communications, 28(1), 1998, pp. 147-157
The synthesis of new pyrrolo [a]- and [b]acridinones by cyclization of
N-arylindoles obtained using ultrasonic irradiations from nitro indol
e is reported.