Abstract
7-Arylquinolinones were obtained in two steps from 3-aminobiphenyls through conversion into cinnamic amides. The highly regioselective cyclization under elimination of anisole proceeded in the presence of phosphoric acid and phosphorous pentoxide. 6-Arylindoles were accessible, although in lower yields, from 3-aminobiphenyls via 3-(biphenylamino)acrylates and palladium-catalyzed cyclization reactions.
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