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A Proton-Coupled Electron Transfer Strategy to the Redox-Neutral Photocatalytic CO~2~ Fixation by Pietro Franceschi; Elena Rossin; Giulio Goti; Angelo Scopano; Alberto Vega-Peñaloza; Mirco Natali; Deepak Singh; Andrea Sartorel; Luca Dell’Amico is a Chemistry article available to read on EtoBox.
What is A Proton-Coupled Electron Transfer Strategy to the Redox-Neutral Photocatalytic CO~2~ Fixation about?
Herein, we report our study on the design and development of a novel photocarboxylation method. We have used an organic photoredox catalyst (PC, 4CzIPN) and differently substituted dihydropyridines (DHPs) in combination with an organic base (1,5,7-triazabicyclodec-5-ene, TBD) to access a proton-coupled electron transfer (PCET) based manifold. In depth mechanistic investigations merging experimental analysis (NMR, IR, cyclic voltammetry) and density-functional theory (DFT) calculations reveal the key activity of a H-bonding complex between the DHP and the base. The thermodynamic and kinetic benefits of the PCET mechanism allowed the implementation of a redox-neutral fixation process leading to synthetically relevant carboxylic acids (18 examples with isolated yields up to 75%) under very mild reaction conditions. Finally, diverse product manipulations were performed to demonstrate the synthetic versatility of the obtained products.
Who reads A Proton-Coupled Electron Transfer Strategy to the Redox-Neutral Photocatalytic CO~2~ Fixation?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Pietro Franceschi; Elena Rossin; Giulio Goti; Angelo Scopano; Alberto Vega-Peñaloza; Mirco Natali; Deepak Singh; Andrea Sartorel; Luca Dell’Amico
- Publisher
- American Chemical Society (ACS)
- Published
- 2023
- Language
- EN
- Field
- Chemistry (Physical Sciences)