Comparative Reactivity of TpRu(L)(NCMe)Ph (L = CO or PMe3): Impact of Ancillary Ligand L on Activation of Carbon-Hydrogen Bonds Including Catalytic Hydroarylation and Hydrovinylation/Oligomerization of Ethylene

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Article discussing research on the comparative reactivity of TpRu(L)(NCMe)Ph (L = CO or PMe3) and the impact of ancillary ligand L on activation of carbon-hydrogen bonds including catalytic hydroarylation and hyrdovinylation/oligomerization of ethylene.

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Foley, Nicholas A.; Lail, Marty; Lee, John P.; Gunnoe, T. Brent; Cundari, Thomas R., 1964- & Petersen, Jeffrey L. May 9, 2007.

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Article discussing research on the comparative reactivity of TpRu(L)(NCMe)Ph (L = CO or PMe3) and the impact of ancillary ligand L on activation of carbon-hydrogen bonds including catalytic hydroarylation and hyrdovinylation/oligomerization of ethylene.

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17 p.

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Reprinted with permission from the Journal of the American Chemical Society. Copyright 2007 American Chemical Society.

Abstract: Complexes of the type TpRu(L)(NCMe)R [L = CO or PMe3; R = Ph or Me; Tp = hydridotris-(pyrazolyl)borate] initiate C-H activation of benzene. Kinetic studies, isotopic labeling, and other experimental evidence suggest that the mechanism of benzene C-H activation involves reversible dissociation of acetonitrile, reversible benzene coordination, and rate-determining C-H activation of coordinated benzene. TpRu(PMe3)(NCMe)Ph initiates C-D activation of C6D6 at rates that are approximately 2-3 times more rapid than that for TpRu(CO)(NCMe)Ph (depending on substrate concentration); however, the catalytic hydrophenylation of ethylene using TpRu(PMe3)(NCMe)Ph is substantially less efficient than catalysis with TpRu(CO)(NCMe)Ph. For TpRu(PMe3)(NCMe)Ph, C-H activation of ethylene, to ultimately produce TpRu-(PMe3)(ɳ3-C4H7), is found to kinetically compete with catalytic ethylene hydrophenylation. In THF solutions containing ethylene, TpRu(PMe3)(NCMe)Ph and TpRu(CO)(NCMe)Ph separately convert to TpRu(L)(ɳ3-C4H7)(L = PMe3 or CO, respectively) via initial Ru-mediated ethylene C-H activation. Heating mesitylene solutions of TpRu(L)(ɳ3-C4H7) under ethylene pressure results in the catalytic production of butenes (i.e., ethylene hydrovinylation) and hexenes.

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  • Journal of the American Chemical Society, 129(21), American Chemical Society, May 9, 2007, pp. 1-17

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  • Publication Title: Journal of the American Chemical Society
  • Volume: 129
  • Issue: 21
  • Page Start: 6765
  • Page End: 6781
  • Peer Reviewed: Yes

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  • May 9, 2007

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Thumbnail image of item number 1 in: 'Comparative Reactivity of TpRu(L)(NCMe)Ph (L = CO or PMe3): Impact of Ancillary Ligand L on Activation of Carbon-Hydrogen Bonds Including Catalytic Hydroarylation and Hydrovinylation/Oligomerization of Ethylene'.
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Foley, Nicholas A.; Lail, Marty; Lee, John P.; Gunnoe, T. Brent; Cundari, Thomas R., 1964- & Petersen, Jeffrey L. Comparative Reactivity of TpRu(L)(NCMe)Ph (L = CO or PMe3): Impact of Ancillary Ligand L on Activation of Carbon-Hydrogen Bonds Including Catalytic Hydroarylation and Hydrovinylation/Oligomerization of Ethylene, article, May 9, 2007; [Washington, DC]. (https://digital.library.unt.edu/ark:/67531/metadc77140/: accessed March 16, 2025), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT College of Arts and Sciences.

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