Transient Absorption Spectroscopy Offers Mechanistic Insights for an Iridium/Nickel-Catalyzed C–O Coupling
Top Cited Papers
- 20 February 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 142 (10), 4555-4559
- https://doi.org/10.1021/jacs.9b12835
Abstract
We report mechanistic insights into an iridium/nickel photocatalytic C–O cross-coupling reaction from time-resolved spectroscopic studies. Using transient absorption spectroscopy, energy transfer from an iridium photocatalyst to a catalytically relevant Ni(II)(aryl) acetate acceptor was observed. Concentration-dependent lifetime measurements suggest the mechanism of the subsequent reductive elimination is a unimolecular process occurring on the long-lived excited state of the Ni(II) complex. We envision that our study of the productive energy-transfer mediated pathway would en-courage the development of new excited-state reactivities in the field of metallophotocatalysis that are enabled by light harvesting.Keywords
Funding Information
- Basic Energy Sciences (DE-SC0019370)
- Division of Graduate Education (DGE-1656466)
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