Thiofluorination of Carbon–Carbon Multiple Bonds Using Electrochemically Generated ArS(ArSSAr)+BF4−

The reaction of alkenes and alkynes with ArS(ArSSAr)+BF4−, which was generated and accumulated by the low-temperature anodic oxidation of ArSSAr in Bu4NBF4/CH2Cl2, led to the addition of an ArS group and fluoride across the carbon–carbon multiple bond to give thiofluorinated compounds in good yields.