Copper-catalyzed conversion of aryl and heteroaryl bromides into the corresponding iodide

• A new method for copper-catalyzed Br and I-exchange reaction is described.
• This method exhibits excellent functional group tolerance and wide applicability.
• The reaction conditions are mild, the I-source and solvent are cheap and available.

An efficient method for the synthesis of aryl and heteroaryl iodides is described in this study. The reactions of aryl and heteroaryl bromides with potassium iodide proceeded smoothly in the presence of a copper catalyst under mild reaction conditions to produce the corresponding iodides in satisfactory to excellent yields.

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