A three-component palladium-catalyzed aminocarbonylation of aryl and heteroaryl sp C-H bonds using nitroarenes as the nitrogen source was achieved using Mo(CO) as the reductant and origin of the CO. This intermolecular C-H bond functionalization does not requires any exogenous ligand to be added, and our mechanism experiments indicate that the palladacycle catalyst serves two roles in the aminocarbonylation reaction: reduce the nitroarene to a nitrosoarene and activate the sp C-H bond.
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