| 摘要 |
The invention relates to a process for preparing aromatic sulphonylimides, to the sulphonylimides obtained, and to the use thereof as salt of an electrolyte. The sulphonylimides correspond to the formula [R—SO2—N—SO2R′]rM (I). R′is an ArZL- group. R′is a perfluoroalkyl group or an ArZL- group. Z is an S, SO or SO2 group. L is a—(CF2)n—CFRf—group. n is 0 or 1; Rf represents F or a C1 to C8 perfluoroalkyl group; Ar is an aromatic group. M represents H, an alkali metal cation, an alkaline earth metal cation, a trivalent or tetravalent metal cation, or an organic cation. The process consists in preparing a compound RSO2N(R′)SO2R′from RSO2F, and in replacing the group R′by nucleophilic substitution reaction so as to obtain the compound (I), R′being a benzyl or trimethylsilyl group.
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