Scalable selective electrochemical oxidation of sulfides to sulfoxides. Issue 12 (5th June 2022)

• Record Type: Journal Article
• Authors: Fu, Zi-Hao; Tian, Hao-Dong; Ni, Shao-Fei; Wright, James S.; Li, Ming; Wen, Li-Rong; Zhang, Lin-Bao
• Is Part Of: Green chemistry. Volume 24:Issue 12(2022)
• Page Start: 4772
• Page End: 4777
• Publication Date: 2022-06-05
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d1gc04832e
• Languages: English
• ISSNs: 1463-9262

Abstract

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. 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.