Ligand-Free Copper Powder Catalyzed Direct Coupling Reaction of Heterocyclic C-H Bonds and Aryl Halides

[摘要]：The catalytic coupling reaction of aryl halides and heterocycles has been developed using copper powder as the catalyst in N,N-dimethylacetamide. The procedure is experimentally simple and free from the addition of external cocatalysts or chelating ligands.

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