The Emerson/Stokes collaboration has reported the synthesis, characterization, and catalytic trials for a copper N-heterocyclic carbene complex. The complex was characterized using X-ray crystallography, UV-vis, EPR, cyclic voltammetry and ESI-HRMS. The tetradentate NHC was used to catalytically generate new C-N bonds from a series of phenylboronic acids and amines via the Chan-Evans-Lam coupling reaction. The redox properties indicate that the catalyst can readily access all three copper oxidation states under atmospheric conditions.
Cope, J. D.; Sheridan, P. E.; Galloway, C. J.; Awoyemi, R. F.; Stokes, S. L.; Emerson, J. P. Synthesis and Characterization of a Tetradentate, N-Heterocyclic Carbene Copper(II) Complex and Its Use as a Chan-Evans-Lam Coupling Catalyst. Organometallics 2020, 39(24), 4457-4464.
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