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Indirect Electrosynthesis with Halogen Ions as Mediators
Author(s) -
Lian Fei,
Xu Kun,
Zeng Chengchu
Publication year - 2021
Publication title -
the chemical record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.61
H-Index - 78
eISSN - 1528-0691
pISSN - 1527-8999
DOI - 10.1002/tcr.202100036
Subject(s) - electrosynthesis , halogen , chemistry , electron transfer , electrochemistry , redox , halogenation , combinatorial chemistry , ion , nanotechnology , photochemistry , inorganic chemistry , materials science , organic chemistry , electrode , alkyl
Organic electrosynthesis has gained increasing research interest as it harvests electric current as redox regents, thereby providing a sustainable alternative to conventional approaches. Compared with direct electrosynthesis, indirect electrosynthesis employs mediator(s) to lower the overpotentials for substrate activation, and enhance the reaction efficiency and functional group compatibility by shifting the heterogenous electron transfer process to be homogenous. As one of the most versatile and cost‐efficient mediators, halogen mediators are always combined with an irreversible halogenation reaction. Thus, the electrochemical reaction between halogen mediators and substrates doesn't directly controlled by the two standard potentials difference. In this account, our recent developments in the area of halogen‐mediated indirect electrosynthesis are summarized. The anodically generated halogen species from halogenide salts have the abilities to undergo electron‐transfer (ET) or hydrogen‐atom‐ transfer (HAT) processes. The reaction features, scopes, limitations, and mechanistic rationalisations are discussed in this account. We hope our studies will contribute to the future developments to broaden the scope of halogen‐mediated electrosynthesis.