Add time:07/31/2019         Source:sciencedirect.com

An efficient copper-catalyzed double C–N bond forming reaction using diiodides and nitrogen-centered nucleophiles including amides and carbamates is reported. The reactions proceed to afford di- or tri-substituted N-acylpyrroles, dihydropyrroles, and carbazoles in good to excellent yields when different diiodides such as 1,4-diiodo-1,3-butadienes, 1,4-dihalobut-1-enes, and 2,2′-diiodobiphenyls were employed, respectively. It is crucial to use CuI as the catalyst with the assistance of proper base and diamine ligand.

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