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Issue 9, 2017, Issue in Progress
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Cross C–S coupling reaction catalyzed by copper(i) N-heterocyclic carbene complexes

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Abstract

Copper(I) N-heterocyclic carbene has a good activity towards aryl halides and was used as a model complex to study the catalytic cycle of Cu(I) to catalyze the cross C–S coupling reaction because the N-heterocyclic carbene has a strong electron donating property, and ligand dissociation can be avoided. Free radical scavenger cumene does not retard the yield of the reaction indicating that the catalytic reaction goes through a non free radical path. Switching the solvent from toluene to DMF lowered the yield of the reaction. DFT calculation shows that the activation of aryl halide is the rate determining step, and the activation energy is higher for the reaction in DMF than in toluene. A plausible catalytic cycle is proposed with the support of DFT calculation.

Graphical abstract: Cross C–S coupling reaction catalyzed by copper(i) N-heterocyclic carbene complexes

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Publication details

The article was received on 05 Dec 2016, accepted on 30 Dec 2016 and first published on 17 Jan 2017


Article type: Paper
DOI: 10.1039/C6RA27757H
RSC Adv., 2017,7, 4912-4920
  • Open access: Creative Commons BY-NC license
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    Cross C–S coupling reaction catalyzed by copper(I) N-heterocyclic carbene complexes

    W. Huang, W. Chen, I.-Jui Hsu, C. Han and S. Shyu, RSC Adv., 2017, 7, 4912
    DOI: 10.1039/C6RA27757H

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