ChemInform Abstract: Quinoxalinone—Benzimidazole Rearrangement: An Efficient Strategy for the Synthesis of Structurally Diverse Quinoline Derivatives with Benzimidazole Moieties.
Spiroquinoxalinone derivatives, generated in situ from 3-(o-aminophenyl)quinoxalinones (I) with acetophenones, undergo acid mediated rearrangement to give benzimidazolylquinolines (III).