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Updated: Jul 4, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Asymmetric cycloadditions of palladium-polarized aza-o-xylylenes
1Department of Chemistry, University of Kansas, 2010 Malott Hall, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, USA.
Abstract:
Vinyl benzoxazinanones undergo highly enantioselective decarboxylative cycloadditions with electron-deficient olefins in the presence of palladium catalysts. Palladium induces the decarboxylation of the parent benzoxazinanones under mild conditions to produce an intermediate that can be described as a polarized aza-o-xylylene. These intermediates undergo a formal [4 + 2] cycloaddition with good Michael acceptors to produce highly substituted hydroquinolines with excellent regio-, diastereo-, and enantioselectivities.
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