2020 EJRNL PP Fei Wang -1.pdf
Terbatas Irwan Sofiyan
» ITB
Terbatas Irwan Sofiyan
» ITB
Electrochemical organic oxidation reactions are
highly appealing because protons are often effective terminal
electron acceptors, thereby avoiding undesirable stoichiometric
oxidants. These reactions are often plagued by high overpotentials,
however, that greatly limit their utility. Single-electron transfer
(SET) from organic molecules generates high-energy radicalcations.
Formation of such intermediates often requires electrode
potentials far above the thermodynamic potentials of the reaction
and frequently causes decomposition and/or side reactions of
ancillary functional groups. In this Account, we show how
electrocatalytic electron?proton transfer mediators (EPTMs)
address this challenge. EPTMs bypass the formation of radicalcation
intermediates by supporting mechanisms that operate at electrode potentials much lower (?1 V) than those of analogous
direct electrolysis reactions.