Process for producing aminoalkylsulfonic acid and method of salt exchange for salt thereof

• Main Author: KIMURA TAKUHIRO,TANI TSUTOMU,MIYAHARA REIJI
• Format: Patent
• Language: English
• Published: 17.01.2007
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The present invention relates to a method for efficiently producing an aminoalkylsulfonic acid in an industrial scale, and provides "a process for producing an aminoalkylsulfonic acid represented by the general formula Ä2Ü: wherein R and R are each independently a hydrogen atom, an alkyl group, an aryl group or an aralkyl group; and R and R are each independently a hydrogen atom or an alkyl group, comprising reacting an aminoalkylsulfonate salt represented by the general formula Ä1Ü: wherein M is an alkali metal atom, an organic ammonium ion or an ammonium ion; and R to R are the same as described above, an aqueous solution thereof, or a solution dissolving any one of them in a water-soluble organic solvent, selected from alcohols having 1 to 3 carbon atoms, carboxylic acids having 2 to 12 carbon atoms and dimethylformamide, with an organic acid; and a method of salt exchange for an aminoalkylsulfonate salt represented by the general formula Ä1'Ü: wherein M' is an alkali metal atom, an organic ammonium ion or an ammonium ion; and R and R are the same as described above, comprising reacting an aminoalkylsulfonate salt represented by the above general formula Ä2Ü with a hydroxide represented by the general formula Ä6Ü: M'OH wherein M' is the same as described above, in an alcohol or water".