Electrophilic Rh^I catalysts for arene H/D exchange in acidic media: evidence for an electrophilic aromatic substitution mechanism
Michael S. Webster-Gardiner, Paige E. Piszel, Ross Fu, Bradley A. McKeown, Robert J. Nielsen, William A. Goddard III, T. Brent Gunnoe
2016Journal of Molecular Catalysis A: Chemical, 426(Part B), 381-38815cited
Abstract
A series of new rhodium (I) complexes supported by bidentate nitrogen-donor ligands with varying electronic and steric properties were synthesized in situ and evaluated for catalytic arene C−H/D activation. In trifluoroacetic acid (HTFA), these complexes are proposed to mediate H/D exchange of arene C−H/D bonds by an electrophilic aromatic substitution mechanism that involves Rh-mediated activation of HTFA (or DTFA). DFT calculations support the proposed pathway for the H/D exchange reactions.
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Webster-Gardiner, M. S., Piszel, P. E., Fu, R., McKeown, B. A., Nielsen, R. J., III, W. A. G., & Gunnoe, T. B. (2016). Electrophilic Rh^I catalysts for arene H/D exchange in acidic media: evidence for an electrophilic aromatic substitution mechanism. *Journal of Molecular Catalysis A: Chemical*, *426*(Part B), 381-388. https://doi.org/10.1016/j.molcata.2016.07.045