Electrochemical Properties and Fluorination of Cyclopropane Derivatives Bearing Arylthio Groups

Electrochemical analyses of phenylthiocyclopropane derivatives and bis(arylthio)cyclopropanes were comparatively studied by cyclic voltammetric measurements. Based on the substituent effects on their oxidation potentials, a cyclopropane ring was confirmed to have a double bond system as reported. Anodic fluorination of phenylthiocyclopropanes resulted in the formation of sulfoxide and/or ring opening fluorinated products while 1,1-bis(arylthio)cyclopropanes afforded mainly desulfurizative monofluorinated cyclopropanes and sulfoxides together with ring opening fluorinated products. This is the first successful electrochemical fluorination of a cyclopropane ring.