55. Mechanism and Origins of Selectivities in the Copper-Catalyzed Dearomatization-Induced ortho C–H Cyanation of Vinylarenes


Journal article


Yang Yang, Peng Liu
ACS Catalysis, vol. 5, 2015, pp. 2944-2951


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Cite

APA   Click to copy
Yang, Y., & Liu, P. (2015). 55. Mechanism and Origins of Selectivities in the Copper-Catalyzed Dearomatization-Induced ortho C–H Cyanation of Vinylarenes. ACS Catalysis, 5, 2944–2951. https://doi.org/10.1021/acscatal.5b00443


Chicago/Turabian   Click to copy
Yang, Yang, and Peng Liu. “55. Mechanism and Origins of Selectivities in the Copper-Catalyzed Dearomatization-Induced Ortho C–H Cyanation of Vinylarenes.” ACS Catalysis 5 (2015): 2944–2951.


MLA   Click to copy
Yang, Yang, and Peng Liu. “55. Mechanism and Origins of Selectivities in the Copper-Catalyzed Dearomatization-Induced Ortho C–H Cyanation of Vinylarenes.” ACS Catalysis, vol. 5, 2015, pp. 2944–51, doi:10.1021/acscatal.5b00443.


BibTeX   Click to copy

@article{yang2015a,
  title = {55. Mechanism and Origins of Selectivities in the Copper-Catalyzed Dearomatization-Induced ortho C–H Cyanation of Vinylarenes},
  year = {2015},
  journal = {ACS Catalysis},
  pages = {2944-2951},
  volume = {5},
  doi = {10.1021/acscatal.5b00443},
  author = {Yang, Yang and Liu, Peng}
}

The mechanism of the copper-catalyzed regioselective ortho C–H cyanation of vinylarenes has been investigated using density functional theory calculations. This C–H cyanation is composed of two discrete catalytic cycles (the copper-catalyzed electrophilic cyanative dearomatization and the subsequent base-catalyzed hydrogen transposition) that furnish the ortho C–H cyanated arenes. The electrophilic cyanation step features a unique six-membered transition state, leading to the formation of the dearomatized intermediate with a high level of site selectivity. Such dearomatization significantly increases the reactivity of the C–H bond, thereby enabling the base-assisted C–H activation in the following steps.

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