| abstract |
This invention provides a process for preparing a thiosulfonate derivative represented by the formula R2SO2SR1 (III) wherein R1 is substituted or unsubstituted 2-benzothiazolyl, and R2 is substituted or unsubstituted phenyl, the process being characterized in that a compound represented by the formula R1SX (I) wherein R1 is as defined above, and X is hydrogen, alkali metal or SR1, and a sulfinic acid or a salt thereof represented by the formula R2SO2Y (II) wherein R2 is as defined above, and Y is a hydrogen atom, alkali metal atom, alkaline earth metal atom or quaternary ammonium are subjected to an electrolytic reaction in a mixture of water and an organic solvent in the presence of a halogen salt. |