One-Step Synthesis of Quinolines via Palladium-Catalyzed Cross-Coupling of Cyclopropanols with Unprotected ortho-Bromoanilines
摘要:
The cross-coupling of unprotected ortho-bromoanilines with cyclopropanols yields quinolines in a single operation via an intramolecular condensation and palladium-catalyzed oxidation sequence. The reaction tolerates a variety of cyclopropanols and substituted bromoanilines. Deuterium-labeling experiments provide direct evidence of a second equivalent of bromoaniline serving as the terminal oxidant.