Qingquan Lu+, Jian Zhang+, Pan Peng, Guanghui Zhang, Zhiliang Huang, Hong Yi, Jeffrey T Miller, Aiwen Lei*, Operando X-ray absorption and EPR evidence for a single electron redox process in copper catalysis

Release time:2023-05-21 Hits:

DOI number:10.1039/c5sc00807g

Journal:Chemical Science

Abstract:An unprecedented single electron redox process in copper catalysis is confirmed using operando X-ray absorption and EPR spectroscopies. The oxidation state of the copper species in the interaction between Cu(ii) and a sulfinic acid at room temperature, and the accurate characterization of the formed Cu(i) are clearly shown using operando X-ray absorption and EPR evidence. Further investigation of anion effects on Cu(ii) discloses that bromine ions can dramatically increase the rate of the redox process. Moreover, it is proven that the sulfinic acids are converted into sulfonyl radicals, which can be trapped by 2-arylacrylic acids and various valuable beta-keto sulfones are synthesized with good to excellent yields under mild conditions.

Indexed by:Journal paper

Discipline:Natural Science

Document Type:J

Volume:6

Page Number:4851-4854

Translation or Not:no

Date of Publication:2015-05-26

Included Journals:SCI

Links to published journals:https://pubs.rsc.org/en/content/articlelanding/2015/SC/C5SC00807G