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Updated: May 15, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
Published on: July 30, 2017
Advances in Vicinal Dicarbo-C-H-functionalization of Five-Membered Heteroarenes via Palladium/Norbornene Cooperative
Yun Zhou1, Renhe Li1, Rong Ye1
1Department of Chemistry, University of Chicago, 5735 S Ellis Ave, Chicago, IL 60637, USA.
Abstract:
Direct introduction of two carbon substituents to less functionalized aromatic cores has been an attractive objective for late-stage modification and streamlined synthesis of complex molecules. Using the palladium/norbornene (Pd/NBE) cooperative catalysis, while initial achievements on double C-H functionalization were made in the past, the scopes of reactions and substrates remain to be expanded. Here we report some new advances on the Pd/NBE-catalyzed dicarbofunctionalization of five-membered heteroarenes through sequential C-H activation. These efforts include the Pd/NBE-catalyzed C4-arylation/C5-alkenylation of diverse furans, the first C4-alkynylation of thiophenes/pyrroles, and the preliminary C4-methylation.
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