Synthesis of Chiral N-Heterocyclic Carbene Ligands with Rigid Backbones and Application to the Palladium-Catalyzed Enantioselective Intramolecular alpha-Arylation of Amides

[摘要]：Chiral N-heterocyclic carbene (NHC) ligands having a 2,2'-bisquinoline-based C-2 symmetric skeleton were developed. The ligands exhibited good enantioselectivity in palladium-catalyzed intramolecular alpha-arylation of amides to give 3,3-disubsituted oxindoles.

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