Abstract: The invention relates to a method for producing a fluorine- and sulphur-bearing compound of formula F—SO—R (I) or F—SO2—R (II), comprising the reaction, in the presence of water, of at least one salt providing a fluoride anion and at least one halgoenosulfoxide compound of formula X—SO—R? (I0) from a halogenosulfonyl compound of formula X—SO2—R? (II0), in which X is a halogen atom other than fluorine and R and R? are each a group linked by a covalent bond to the sulphur atom, said bond linking the sulphur atom with a nitrogen atom. The invention also relates to a method for producing salts of a fluorine- and sulphur-bearing compound of formula F—SO—R (I) or F—SO2—R (II) which are advantageously used as electrolyte salts, as precursors of antistatic agents or as surfactant precursors.

Abstract: The present invention relates to a process for recovering a metal salt of an electrolyte dissolved in a matrix, said process consisting in subjecting the electrolyte to a liquid extraction with water.

Abstract: The invention relates to a method for producing an oxysulphidic and fluorinated derivative in the form of a salt of formula (II) Ea-SO?Q+ (II) comprising providing an ionic liquid compound of formula (I) in the liquid state Ea-SOO?Cr (II)—Ea representing the fluorine atom or a group having between 1 and 10 carbon atoms selected from fluoroalkyls, perfluoroalkyls and fluoroalkenyls; and—Q+ representing an onium cation, with a sulphur oxide, said ionic liquid compound of formula (I) representing at least 50 wt. % of the initial liquid reactive medium.

Abstract: The present disclosure relates to the preparation of a compound of formula (I) comprising an —SO2F function, R—SO2F, by reacting a compound of formula (II), R?—SO2X, with a fluorinating agent, the process carried out in the liquid phase in the presence of hydrofluoric acid using an antimony-based fluorination catalyst, wherein R, R?, and X are described herein.

Abstract: The invention concerns a method for preparing an oxysulphide and fluorinated derivative, said method comprising the reacting, in the presence of an organic solvent, of: i) at least one compound of formula Ea-COOR (I), in which Ea represents the fluorine atom or a group having 1 to 10 carbon atoms chosen from fluoroalkyls, perfluoroalkyls and fluoroalkenyls and R represents hydrogen, a monovalent cation or an alkyl group, and ii) a sulphur oxide, said method being such that the initial molar ratio (sulphur oxide/compound of formula (I)) is less than 0.4 and the concentration of sulphur oxide dissolved in the reaction medium is kept constant for the entire duration of the reaction to a value of between 0.2% and 3% by weight by means of continually adding said sulphur oxide to the reaction medium.

Abstract: The preparation is described of a compound of formula (I) comprising an —SO2F function by reacting a compound of formula (II) with a fluorinating agent selected from hydrofluoric acid and an ionic fluoride of a monovalent or divalent cation: R—SO2F??(I) R?—SO2X??(II) where R is selected from the groups R1, R2 and R3: R1=—CnHaFb with n=1-10, a+b=2n+1, b?1; R2=—CxHyFz—SO2F with x=1-10, y+z=2x and z?1; R3=?-CcHhFf with c=1-10; h+f=2c and f?1; where R? is selected from the following groups R?1, R?2 and R?3: R?1=—CnHaXb with n=1-10, a+b=2n+1, b?1; R?2=—CxHyXz—SO2X with x=1-10, y+z=2x and z?1; R?3=?-CcHhXf with c=1-10; h+f=2c and f?1; ? denoting a phenyl group; X?Cl, Br.

Abstract: The present invention relates to a process for recovering a metal salt of an electrolyte dissolved in a matrix, said process consisting in subjecting the electrolyte to a liquid extraction with water.

Abstract: The preparation is described of a compound of formula (I) comprising an —SO2F function by reacting a compound of formula (II) with a fluorinating agent selected from hydrofluoric acid and an ionic fluoride of a monovalent or divalent cation: R-SO2F ??(I) R?-SO2X ??(II) where R is selected from the groups R1, R2 and R3: R1=—CnHaFb with n=1-10, a+b=2n+1, b?1; R2=—CxHyFz—SO2F with x=1-10, y+z=2x and z?1; R3=?-CcHhFf with c=1-10; h+f=2c and f?1; where R? is selected from the following groups R?1, R?2 and R?3: R?1=—CnHaXb with n=1-10, a+b=2n+1, b?1; R?2=—CxHyXz-SO2X with x=1-10, y+z=2x and z?1; R?3=?-CcHhXf with c=1-10; h+f=2c and f?1; ? denoting a phenyl group; X=Cl, Br.

Abstract: The invention relates to a method for producing a fluorine- and sulphur-bearing compound of formula F—SO—R (I) or F—SO2—R (II), comprising the reaction, in the presence of water, of at least one salt providing a fluoride anion and at least one halgoenosulfoxide compound of formula X—SO—R? (I0) from a halogenosulfonyl compound of formula X—SO2—R? (II0), in which X is a halogen atom other than fluorine and R and R? are each a group linked by a covalent bond to the sulphur atom, said bond linking the sulphur atom with a nitrogen atom. The invention also relates to a method for producing salts of a fluorine- and sulphur-bearing compound of formula F—SO—R (I) or F—SO2—R (II) which are advantageously used as electrolyte salts, as precursors of antistatic agents or as surfactant precursors.

Abstract: The invention concerns a method for preparing an oxysulphide and fluorinated derivative, said method comprising the reacting, in the presence of an organic solvent, of: i) at least one compound of formula Ea-COOR (I), in which Ea represents the fluorine atom or a group having 1 to 10 carbon atoms chosen from fluoroalkyls, perfluoroalkyls and fluoroalkenyls and R represents hydrogen, a monovalent cation or an alkyl group, and ii) a sulphur oxide, said method being such that the initial molar ratio (sulphur oxide/compound of formula (I)) is less than 0.4 and the concentration of sulphur oxide dissolved in the reaction medium is kept constant for the entire duration of the reaction to a value of between 0.2% and 3% by weight by means of continually adding said sulphur oxide to the reaction medium.

Abstract: The present invention relates to a method for preparing an aqueous sulfonimide compound of the formula (Rf1—SO2)(Rf2—SO2)NH, wherein Rf1 and Rf2 are independently selected from the group comprising: a fluorine atom and groups having 1 to 10 carbon atoms selected from the perfluoroalkyl, fluoroalkyl, fluoroalkenyl and fluoroallyl groups, from a mixture M1 including (Rf1—SO2)(Rf2—SO2)NH, Rf1SO2H and/or Rf2SO2H, Rf1SO2NH2 and/or Rf2SO2NH2, characterized in that said method includes an oxidation step of said mixture M1 using an oxidizing agent in order to obtain a mixture M2 including (Rf1—SO2)(Rf2—SO2)NH, Rf1SO3H and/or Rf2SO3H and Rf1SO2NH2and/or Rf2SO2NH2.

Abstract: The present invention relates to a method for preparing an aqueous sulfonimide compound of the formula (Rf1—SO2) (Rf2—SO2)NH, wherein Rf1et Rf2 are independently selected from the group comprising: a fluorine atom and groups having 1 to 10 carbon atoms selected from the perfluoroalkyl, fluoroalkyl, fluoroalkenyl and fluoroallyl groups, from a mixture M1 including (Rf1—SO2)(Rf2—SO2)NH, Rf1SO2H and/or Rf2SO2H, Rf1SO2NH2 and/or Rf2SO2NH2, characterized in that said method includes an oxidation step of said mixture M1 using an oxidizing agent in order to obtain a mixture M2 including (Rf1—SO2)(Rf2—SO2)NH, Rf1SO3H and/or Rf2SO3H, and Rf1SO2NH2 and/or Rf2SO2NH2.

Abstract: A method for preparing a compound of formula (I) which is a vanillin derivative, of dimer type, called 3-(4-hydroxy-3-methoxybenzyl)-4-hydroxy-5-methoxybenzaldehyde, such method comprising a reaction of vanillin and vanillyl alcohol in the presence of a base.

Abstract: A method for preparing a compound of formula (I) which is a vanillin derivative, of dimer type, called 3-(4-hydroxy-3-methoxybenzyl)-4-hydroxy-5-methoxybenzaldehyde, such method comprising a reaction of vanillin and vanillyl alcohol in the presence of a base.

Abstract: The present invention relates to a method for preparing a halogenoacetyl fluoride and the derivatives thereof. The inventive method for preparing a halogenoacetyl fluoride acid is characterized in that said method includes: a step of preparing a halogenoacetyl halide by photo-oxidation of a halogenoethylene compound in conditions such that the transformation rate of the halogenoethylene compound into halogenoacetyl halide is no higher than 80%, producing a reaction mixture essentially including halogenoacetyl halide and the excess halogenoethylene compound; a step of partial fluorination of the mixture obtained by reacting the latter with hydrofluoric acid suitable for obtaining a mixture of halogenoacetyl fluoride and the excess halogenoethylene compound; a step of separating the halogenoacetyl fluoride and the excess halogenoethylene compound. The invention can be used, specifically, for preparing the trichloroacetyl fluoride used as an intermediate species in the production of trifluoroacetic acid.

Abstract: The subject of the present invention is a method for separating a carboxylic acid in salified form bearing at least one halogen atom at the ? position of the carbonyl group from a medium comprising it.

Abstract: The present invention relates to a method for preparing a highly pure trifluoromethanesulphinic acid. The method of the invention for preparing a highly pure trifluoromethanesulphinic acid, starting from an aqueous mixture comprising a trifluoromethanesulphinic acid salt, a trifluoroacetic acid salt and saline impurities resulting from the method for preparing same, is characterized in that said mixture is subjected to the following operations: —acidification such that the trifluoroacetic acid salt and the triflinic acid salt are released in an acid form, —separation of the trifluoroacetic acid and trifluoromethanesulphinic acid by distillation enabling the trifluoroacetic acid to be recovered at the top of the distillation and the trifluoromethanesulphinic acid to be recovered at the bottom of the distillation, —separation by distillation of the trifluoromethanesulphinic acid present in the distillation residue previously obtained.

Abstract: The present invention relates to a method for preparing a salt of trifluoromethanesulphinic acid termed “triflinic acid”. More specifically, the invention relates to a method for preparing a highly pure triflinic acid salt.

Abstract: The subject of the present invention is a method for the sulphonylation of a hydroxylated organic compound. The invention relates more particularly to a method for the trifluoromethanesulphonylation of a hydroxylated organic compound. The invention is especially intended for perfluorinated aliphatic hydroxylated compounds. The method of the invention for the sulphonylation of a hydroxylated organic compound is characterized in that it comprises reacting said compound with a sulphonylation agent in an organic medium and in the presence of a heterogeneous inorganic base.

Abstract: The invention relates to a method for preparing difluoroacetic acid and the salts thereof. The invention also relates to the preparation of difluoroacetyl fluoride used as an intermediate product in the preparation of difluoroacetic acid. The method for preparing difluoroacetic acid according to the invention is characterized in that the same comprises the step of preparing difluoroacetyl fluoride by reacting dichloroacetyl chloride with hydrofluoric acid in a gaseous phase and in the presence of a chromium-based catalyst, followed by the step of hydrolysing the difluoroacetyl fluoride thus obtained.