Ligand-free copper-catalyzed arylation of imidazole and N,N '-carbonyldiimidazole, and microwave-assisted synthesis of N-Aryl-1H-imidazoles

[摘要]：Microwave-assisted arylation of 1H-imidazoles and N,N'-carbonyldiinidazole under ligand-free copper-mediated conditions in tetraethyl orthosilicate is reported. Valuable evidence for understanding of the Cu-catalyzed mechanism of the Ullmann reaction is also presented.

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