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Chemical‐Reductant‐Free Electrochemical Deuteration Reaction using Deuterium Oxide
Author(s) -
Liu Xu,
Liu Ruoyu,
Qiu Jiaxing,
Cheng Xu,
Li Guigen
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202005765
Subject(s) - electrochemistry , anode , catalysis , deuterium , chemoselectivity , chemistry , oxide , stoichiometry , inorganic chemistry , cathode , metal , chemical reaction , graphite , photochemistry , electrode , organic chemistry , physics , quantum mechanics
We report a method for the electrochemical deuteration of α,β‐unsaturated carbonyl compounds under catalyst‐ and external‐reductant‐free conditions, with deuteration rates as high as 99 % and yields up to 91 % in 2 h. The use of graphite felt for both the cathode and the anode was key to ensuring chemoselectivity and high deuterium incorporation under neutral conditions without the need for an external reductant. This method has a number of advantages over previously reported deuteration reactions that use stoichiometric metallic reductants. Mechanistic experiments showed that O 2 evolution at the anode not only eliminates the need for an external reductant but also regulates the pH of the reaction mixture, keeping it approximately neutral.