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Zhao P, Incarvito CD, Hartwig JF. Direct observation of beta-aryl eliminations from Rh(I) alkoxides. J Am Chem Soc. 2006;128(10):3124-5doi: 10.1021/ja058550q.
Zhao, P., Incarvito, C. D., & Hartwig, J. F. (2006). Direct observation of beta-aryl eliminations from Rh(I) alkoxides. Journal of the American Chemical Society, 128(10), 3124-5. https://doi.org/10.1021/ja058550q
Zhao, Pinjing, et al. "Direct observation of beta-aryl eliminations from Rh(I) alkoxides." Journal of the American Chemical Society vol. 128,10 (2006): 3124-5. doi: https://doi.org/10.1021/ja058550q
Zhao P, Incarvito CD, Hartwig JF. Direct observation of beta-aryl eliminations from Rh(I) alkoxides. J Am Chem Soc. 2006 Mar 15;128(10):3124-5. doi: 10.1021/ja058550q. PMID: 16522075.
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J Am Chem Soc. 2006 Mar 15;128(10):3124-5. doi: 10.1021/ja058550q.

Direct observation of beta-aryl eliminations from Rh(I) alkoxides.

Journal of the American Chemical Society

Pinjing Zhao, Christopher D Incarvito, John F Hartwig

Affiliations

  1. Department of Chemistry, Yale University, PO Box 208107, New Haven, Connecticut 06520-8107, USA.

PMID: 16522075 DOI: 10.1021/ja058550q

Abstract

beta-Aryl eliminations from a series of rhodium(I) alkoxides to form rhodium aryl complexes and free ketones are reported. Tertiary phenylmethoxide complexes [Rh(PEt3)n(OCPhRR')] (n = 2, 3) were prepared via alcoholysis of {Rh(PEt3)2[N(SiMe3)2} by the corresponding alcohols HOCPhRR' in the presence and absence of added PEt3. Heating of these complexes in the presence of added PEt3 generated the rhodium phenyl complex, (PEt3)3RhPh, and the corresponding ketones in good to high yields. Kinetic results are most consistent with irreversible beta-phenyl elimination from a bisphosphine-ligated rhodium alkoxide complex. Such bisphosphine complexes result from ligand dissociation from the trisphosphine complexes and have been isolated in some cases. The bisphosphine complexes are stabilized by Rh-Cphenyl interactions, as evidenced by an X-ray structure, and this structure with a metal-aryl interaction likely illustrates the pathway for C-C bond cleavage.

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