Journal
SYNTHESIS-STUTTGART
Volume -, Issue -, Pages -Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/a-2044-2140
Keywords
Ce catalysis; photoelectrochemistry; Ce (III)/Ce (IV) redox pair; photoinduced LMCT; single electron transfer
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Photoelectrochemical cerium catalysis is an emerging and rapidly developing strategy in organic syntheses. By combining energy transfer from light and electricity to cerium and ligand-to-metal charge transfer, a sustainable platform is being constructed, enabling the activation of hard-to-oxidize substrates under mild conditions and broad functional group compatibility.
Photoelectrochemical cerium catalysis is an emerging and rapidly developing strategy in organic synthetic. A sustainable platform is being constructed by combining the concerted energy transfer from light and electricity to cerium with the ligand-to-metal charge transfer of excited state Ce-IV species. With this powerful strategy, hard to oxidized substrates can be activated under mild conditions, contributing to broad functional group compatibility. Such as, carboxylic acids, alcohols, and the Cl anion can deliver the corresponding radicals via formal single electron transfer (SET) with a low oxidation potential. Further cooperation with other synthetic strategies, including alkoxy radical promoted hydrogen atom transfer (HAT) and 13-scission, leads to the functionalization of inert C(sp(3))-H, Si-H, and C-C bonds via a mild radical pathway. In this review, recent advances in photoelectrochemical cerium catalysis are described. More importantly, as this field features some unique advantages, but is rarely explored, we hope chemists will pay more attention to this catalytic system.1 Introduction2 Activation of Carboxylic Acids3 Activation of Alcohols 3.1 Alkoxy Radical Involved Hydrogen Atom Transfer3.2 Alkoxy Radical Promoted 13-Scission4 Formal Single-Electron Oxidation of Cl Anion5 Conclusions and Outlook
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