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Abstract An inexpensive and efficient catalyst system has been developed for the N ‐arylation of nitrogen‐containing compounds including a variety of amines, amides, indole and imidazole. This simple protocol uses CuI as the catalyst, commercial available pipecolinic acid as the new ligand, K 2 CO 3 as the base and DMF as the solvent.
Guo et al. (Sun,) studied this question.