Triarylamines as catalytic donors in light-mediated electron donor-acceptor complexes.
Chem Sci
; 14(13): 3470-3481, 2023 Mar 29.
Article
em En
| MEDLINE
| ID: mdl-37006691
ABSTRACT
Recently, photochemistry of Electron Donor-Acceptor (EDA) complexes employing catalytic amounts of electron donors have become of interest as a new methodology in the catalysis field, allowing for decoupling of the electron transfer (ET) from the bond-forming event. However, examples of practical EDA systems in the catalytic regime remain scarce, and their mechanism is not yet well-understood. Herein, we report the discovery of an EDA complex between triarylamines and α-perfluorosulfonylpropiophenone reagents, catalyzing C-H perfluoroalkylation of arenes and heteroarenes under visible light irradiation in pH- and redox-neutral conditions. We elucidate the mechanism of this reaction using a detailed photophysical characterization of the EDA complex, the resulting triarylamine radical cation, and its turnover event.
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MEDLINE
Idioma:
En
Revista:
Chem Sci
Ano de publicação:
2023
Tipo de documento:
Article