A study of halide nucleophilicity in ionic liquids

被引：122

作者：

Lancaster, NL ^{[1
]}

Welton, T ^{[1
]}

Young, GB ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AY, England

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 2001年 / 12期

关键词：

D O I：

10.1039/b107381h

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The relative nucleophilicity of chloride, bromide and iodide anions in [bmim][BF4] ionic liquid has been measured by studying their reaction with methyl p-nitrobenzenesulfonate ([ bmim] = 1-butyl-3-methylimidazolium cation). It has been found that iodide is the most nucleophilic halide, and that chloride and bromide have approximately equal nucleophilicities (Cl- is slightly more nucleophilic than Br-) in [bmim][BF4]. Activation energies for the reaction of chloride and bromide with methyl p-nitrobenzenesulfonate have been calculated. The relative nucleophilicity of the halides has been compared with that observed in molecular solvents and in a tetraalkylammonium tetraalkylboride ionic liquid.

引用

页码：2267 / 2270

页数：4