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Sulfonyl Fluoride Synthesis through Electrochemical Oxidative Coupling of Thiols and Potassium Fluoride

2019; American Chemical Society; Volume: 141; Issue: 30 Linguagem: Inglês

10.1021/jacs.9b06126

1943-2984

Gabriele Laudadio, Aloisio de Andrade Bartolomeu, Lucas M. H. M. Verwijlen, Yiran Cao, Kléber T. de Oliveira, Timothy Noël,

Fluorine in Organic Chemistry

Sulfonyl fluorides are valuable synthetic motifs for a variety of applications, among which sulfur(VI) fluoride exchange-based "click chemistry" is currently the most prominent. Consequently, the development of novel and efficient synthetic methods to access these functional groups is of great interest. Herein, we report a mild and environmentally benign electrochemical approach to prepare sulfonyl fluorides using thiols or disulfides, as widely available starting materials, in combination with KF, as an inexpensive, abundant and safe fluoride source. No additional oxidants nor additional catalysts are required and, due to mild reaction conditions, the reaction displays a broad substrate scope, including a variety of alkyl, benzyl, aryl and heteroaryl thiols or disulfides.