The invention relates to a process for preparing aromatic sulfonylimides, to the sulfonylimides obtained, and to the use thereof as salt of an electrolyte. The sulfonylimides 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.
本发明涉及一种制备芳香基磺
酰亚胺的方法,所得磺
酰亚胺以及其作为电解质盐的用途。所述磺
酰亚胺符合公式[R-SO2-N-SO2R']rM(I),其中R'为ArZL-基团。R'为
全氟烷基或ArZL-基团。Z为S、SO或SO2基团。L为-(
CF2)n-CFRf-基团。n为0或1;Rf代表F或C1至C8的
全氟烷基;Ar为芳香基团。M代表H、碱
金属阳离子、碱土
金属阳离子、三价或四价
金属阳离子或有机阳离子。该方法包括从RSO2F制备化合物RSO2N(R')SO2R',并通过亲核取代反应替换R'基团以获得化合物(I),其中R'为苄基或三甲基
硅基团。