Patent ID: 8742136

Claim:
A method for producing a cyclic disulfonic acid ester, which comprises: reacting a silver alkanedisulfonate represented by following formula (1) with a dihaloalkane represented by following formula (2) in a solvent selected from the group consisting of cyclohexane, n-octane, isooctane, and a mixture of two or three solvents thereof: wherein Y is represented by following formula (8): wherein k is an integer from 1 to 4, and R 1 and R 2 in each of the 1-4 k units are each independently hydrogen, fluorine, an alkyl group, a perfluoroalkyl group, an aryl group, or an aralkyl group, and; wherein X 1 and X 2 are each independently chlorine, bromine, or iodine, and Z is represented by following formula (9): wherein p is an integer from 1 to 4, and R 8 and R 9 in each of the 1-4 p units are each independently hydrogen, fluorine, an alkyl group, a perfluoroalkyl group, an aryl group, or an aralkyl group; and the cyclic disulfonic acid ester is represented by following formula (3): wherein Y and Z are same as described above.