METHOD FOR OBTAINING OF SULFONIMIDE COMPOUND AND ITS SALTS Russian patent published in 2018 - IPC C07C303/02 C07C303/38 C07C303/44 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for obtaining of a sulfonimide compound of the formula (Rf¹-SO₂)(Rf²-SO₂)NH in an aqueous form, where Rf¹ and Rf² are independently selected from the group consisting of a fluorine atom and groups containing 1 to 4 carbon atoms selected from perfluoroalkyl, fluoroalkyl, from a mixture of M1 containing (Rf¹-SO₂)(Rf²-SO₂)NH, Rf¹SO₂H and/or Rf²SO₂H, Rf¹SO₂NH₂ and/or Rf²SO₂NH₂. This method is characterized by comprising the step of M1 mixture oxidizing with an oxidizing agent to produce a M2 mixture containing (Rf¹-SO₂)(Rf²-SO₂)NH, Rf¹SO₃H and/or Rf²SO₃H and Rf¹SO₂NH₂ and/or Rf²SO₂NH₂.

EFFECT: increased yield.

15 cl, 3 ex