1-Oxo-1-fluoro-1,2,4-benzothiadiazines-A new type of cyclic sulfonimidoyl fluorides

- An approach to the synthesis of the novel cyclic sulfonimidoyl fluorides was achieved.
- We examined the electrophilic fluorination of 1-oxo-2H-1,2,4-benzothiadizines with Selectfluor®.
- Crystal structure of 1-fluoro-3-phenyl-1,2,4-benzothiadiazine 1-oxide was determined.