Premium
Proton‐Coupled Electron Transfer in Photoredox Catalytic Reactions
Author(s) -
Hoffmann Norbert
Publication year - 2017
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201601445
Subject(s) - exergonic reaction , proton coupled electron transfer , chemistry , electron transfer , photoredox catalysis , redox , proton , photochemistry , catalysis , electron , chemical physics , organic chemistry , photocatalysis , physics , quantum mechanics
Proton‐coupled electron transfer (PCET) is studied in different research domains of chemistry. Many reports involve biochemical processes. Although related phenomena have often been investigated in photochemical electron‐ and hydrogen‐transfer processes, only recently have a larger variety of such steps come to be discussed under the comprehensive concept of PCET. In photoredox catalytic reactions applied to organic synthesis, various PCET steps have been identified in cases in which redox or simple electron‐transfer steps are estimated to be endergonic by simple comparison of redox potentials. Such steps become exergonic when the electron transfer is coupled with proton transfer. In this article, examples of photoredox catalytic reactions of synthetic interest are reported, with the PCET discussed in detail.