Issue 12, 2022

Scalable selective electrochemical oxidation of sulfides to sulfoxides

Abstract

An electrochemical protocol for the selective oxidation of sulfides to sulfoxides has been developed in which NaCl plays a dual role: (1) as an electrolyte for the electrochemical transformations and (2) as a redox mediator to avoid oxidation of sensitive functional groups. Instead of a traditional oxidant, this methodology utilised traceless electrons as an ideal oxidant using anodic oxidation to access sulfoxides in good to excellent yields at ambient temperature. This metal-free electrochemical protocol is simple, environmentally friendly, and compatible with various sensitive functional groups using mixed acetone/water as the green solvent. Moreover, the cost-effective graphite felt electrodes can be reused up to ten times without loss of electrochemical activity. The methodology could be easily conducted on a gram or even a decagram scale.

Graphical abstract: Scalable selective electrochemical oxidation of sulfides to sulfoxides

Supplementary files

Article information

Article type
Communication
Submitted
26 Dec 2021
Accepted
15 May 2022
First published
20 May 2022

Green Chem., 2022,24, 4772-4777

Scalable selective electrochemical oxidation of sulfides to sulfoxides

Z. Fu, H. Tian, S. Ni, J. S. Wright, M. Li, L. Wen and L. Zhang, Green Chem., 2022, 24, 4772 DOI: 10.1039/D1GC04832E

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