双磺酸官能化离子液体催化脂肪醛室温无溶剂环三聚  

Double sulfonic acid functionlized ionic liquid catalysed aliphtic aldhyde cycle condension under solvent free condension at room temperature

作　　者：郑惠榕[1,2] 郑国才[1,2] 林棋[1,2] 

机构地区：[1]闽江学院化学与化学工程系,福建福州350108 [2]绿色染整福建省高校工程研究中心,福建福州350108

出　　处：《闽江学院学报》2016年第2期88-93,共6页Journal of Minjiang University

基　　金：福州市科技计划项目(2015-G-63);福建省中青年教师教育科研项目(JA14253);福建省大学生创新训练项目(201510395011;201410395041)

摘　　要：以四甲基乙二胺或五甲基二乙烯三胺为原料,经季铵化、酸化两步原子经济反应,合成了4种具有双磺酸基官能化离子液体(BAILs-1~4),产物结构经~1H NMR、^(13)C NMR和元素分析仪等表征.以BAILs-1~4为催化剂,研究了脂肪醛在室温、无溶剂反应条件下的环三聚反应合成1,3,5-三氧噁烷,确定了最佳反应条件:n(醛):n(离子液体)=1∶0.01,反应时间1.5 h,1,3,5-三氧噁烷产率87.2%~97.6%;离子液体经乙醚洗涤、真空干燥即可再生,循环使用5次催化活性保持不变.The synthesis of double-SO_3 H functionalized ionic liquids（ BAILs-1 ~ 4） were achieved from aliphatic diamines or triamine in two steps including N-alkylation and acidification. The obtained compounds were characterized through^1 H NMR,^（13） C NMR and elementary analysis. The cyclotrimerization of aliphatic aldehydes catalyzed by BAILs-1 ~ 4 at room temperature under solvent-free conditions was investigated. Under the optimum reaction conditions ∶ n（ aldehyde） ∶ n（ lq） = 1 ∶ 0. 01,room temperature,1. 5 h,the yields of 1,3,5-trioxanes were 87. 2% ~ 97. 6%. The used ionic liquids could be recovered through washing and drying,and reused five times without any significant loss in their catalytic activity.

关 键 词：Bronsted酸 离子液体 1 3 5-三氧噁烷 脂肪醛 

分 类 号：O621.3[理学—有机化学]