A Convenient Route to Quinolone-Fused Imides and Lactams: Synthesis of Pyrrolo[3,4-b]quinoline-3,9-diones and 1,3,9-triones by Oxidation of Indole Derivatives - Tratrat, Christophe; Giorgi-Renault, Sylviane; Husson, Henri-Philippe (Synlett, 1998)