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Evidence for Photocatalyst Involvement in Oxidative Additions of Nickel-Catalyzed Carboxylate O-Arylations

preprint
submitted on 12.03.2020 and posted on 12.03.2020 by Jamal Malik, Amiera Madani, Bartholomäus Pieber, Peter H. Seeberger
In this study we use in situ infrared tracking to describe the kinetics of dual photo- and nickel-catalyzed carboxylate O-arylations. We examined both a state-of-the-art homogeneous (Ir(ppy)3) and heterogeneous (graphitic carbon nitride) photocatalyst, comparing their kinetics to each other, and to the existing mechanistic proposal. We argue against the current hypothesis, specifically that the photocatalyst is only involved to trigger a rate-limiting reductive elimination.

History

Email Address of Submitting Author

peter.seeberger@mpikg.mpg.de

Institution

Max Planck Institute of Colloids and Interfaces

Country

Germany

ORCID For Submitting Author

0000-0003-3394-8466

Declaration of Conflict of Interest

The authors declare no conflicts of interest.

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