作者:Cecilia Betti、Dario Landini、Angelamaria Maia
DOI:10.1016/j.tet.2007.12.009
日期:2008.2
The nucleophilic reactivity of a representative series of anions has been measured in [hmim][ClO4] 3i, [hm2im][ClO4] 3′i, and [hmim][PF6] 3l ILs in the reaction with n-alkyl methanesulfonates and compared with that found in common molecular solvents (MeOH, DMSO, PhCl). The reactivity is found to depend on both the imidazolium cation–anion interaction and the specific solvation by water present in the
在[hmim] [ClO 4 ] 3i,[hm 2 im] [ClO 4 ] 3'i和[hmim] [PF 6 ] 3l ILs中,在与n甲磺酸烷基酯,并与普通分子溶剂(MeOH,DMSO,PhCl)中的烷基磺酸盐进行比较。发现反应性既取决于咪唑阳离子与阴离子的相互作用,又取决于IL中存在的水的特定溶剂化作用,水起主要作用,尤其是亲水性阴离子。去除最大量的水可显着提高IL中的离子对反应性,直至速率常数k 与在DMSO和低极性介质(PhCl)中获得的结果相当。