초록 ▼

A process for the preparation of perhaloalkanesulfinic and -sulfonic acids and derivatives of these acids. A perhaloalkanesulfinic acid salt is prepared by contacting a metal hydroxymethanesulfinate (preferably, a sodium, zinc or copper hydroxymethanesulfinate) with a perhaloalkyl halide group, in a

A process for the preparation of perhaloalkanesulfinic and -sulfonic acids and derivatives of these acids. A perhaloalkanesulfinic acid salt is prepared by contacting a metal hydroxymethanesulfinate (preferably, a sodium, zinc or copper hydroxymethanesulfinate) with a perhaloalkyl halide group, in a polar solvent. Optionally, the perhaloalkanesulfinic acid salt is then converted to a perhaloalkanesulfinic or -sulfonic acid or a derivative of either of these acids.

대표청구항 ▼

A process for the preparation of a perhaloalkanesulfinic acid salt of formula (I): M[SO2－Rf]n (I) wherein Rf represents a polyfluorinated perhaloalkyl group containing at least two carbon atoms and not containing a halogen atom other than fluorine on the carbon atom adjacent to that which carries th

A process for the preparation of a perhaloalkanesulfinic acid salt of formula (I): M[SO2－Rf]n (I) wherein Rf represents a polyfluorinated perhaloalkyl group containing at least two carbon atoms and not containing a halogen atom other than fluorine on the carbon atom adjacent to that which carries the SO2 group, M represents a metal, and n is equal to 1 or 2 depending on the valency state of the metal M, comprising the step of contacting a metal hydroxymethanesulfinate of formula (II): M[SO2CH2OH]n (II) wherein M and n have the same meaning as in formula (I), in a polar solvent, with a perhaloalkyl halide of formula: RfX wherein Rf represents a polyfluorinated perhaloalkyl group containing at least two carbon atoms and not containing a halogen atom other than fluorine on the carbon atom adjacent to that which carries the group X, wherein X represents chlorine, bromine or iodine, for a time sufficient to obtain said perhaloalkanesulfinic acid salt of formula (I).