Electrolytic partial fluorination of organic compounds. Part 56: Highly regioselective anodic mono- and difluorination of s-triazolo[3,4-b][1,3,4]thiadiazine derivatives

Constant potential anodic oxidation of s-triazolo[3,4-b][1,3,4]thiadiazine derivatives in DME containing Et4NF·4HF using an undivided cell provided the corresponding 7-monofluorinated products predominantly in good to moderate yields. 7,7-Difluorination was also anodically achieved.