改进法合成1-苄基-3-烷基苯并三氮唑类离子液体及其表征

摘要

通过改进的方法合成了1-苄基-3-烷基苯并三氮唑类离子液体.目标产物结构经FT-IR、1H NMR和13C NMR确证.当烷基取代的苯并三氮唑、催化剂CuI和溴苄的物质的量比为10∶2.5∶11时,反应5～6h收率可达82.7％ ～ 86.1％,探讨了离子液体溶解性及熔点与结构的关系.%An improved procedure was developed for the synthesis of 1-benzyl-3-alkylbenzotriazolium ionic liquids from commercially available starting materials.The structures of target compounds were characterized by FT-IR,1H NMR and 13C NMR.The yield reaches 82.7％ ～86.1％ when the molar ratio of substituted alkyl benzotriazole to cuprous iodide and benzyl bromide is 10∶2.5∶ 11,and the reaction time is 5 ～ 6 h.Moreover,their solubility,the relationship between molecular structure and melting point of the ionic liquids were investigated.