Iron Photoredox Catalysis-Past, Present, and Future

Overview

Journal J Am Chem Soc

Publisher American Chemical Society

Specialty Chemistry

Date 2023 Apr 20

PMID 37079887

Authors

Lisa H M de Groot

Aleksandra Ilic

Jesper Schwarz

Kenneth Warnmark

Affiliations

Soon will be listed here.

Abstract

Photoredox catalysis of organic reactions driven by iron has attracted substantial attention throughout recent years, due to potential environmental and economic benefits. In this Perspective, three major strategies were identified that have been employed to date to achieve reactivities comparable to the successful noble metal photoredox catalysis: (1) Direct replacement of a noble metal center by iron in archetypal polypyridyl complexes, resulting in a metal-centered photofunctional state. (2) In situ generation of photoactive complexes by substrate coordination where the reactions are driven via intramolecular electron transfer involving charge-transfer states, for example, through visible-light-induced homolysis. (3) Improving the excited-state lifetimes and redox potentials of the charge-transfer states of iron complexes through new ligand design. We seek to give an overview and evaluation of recent developments in this rapidly growing field and, at the same time, provide an outlook on the future of iron-based photoredox catalysis.

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