采用水热法合成了铋SBA-16催化剂。通过两步法制备了四种对甲苯磺酸官能化的咪唑离子液体,其分子结构由1表征。1 H NMR和MS。采用合成后浸渍法将Bi(10)-SBA-16硅介孔材料与离子液体进行官能化,并用FT-IR,XRD,BET,XPS和TG对得到的材料进行了表征。结果表明,SBA-16的体积和孔径随Bi和离子液体的加入而改变,而SBA-16的三维立方孔结构没有被破坏。在苯甲醚与乙酸酐的Friedel-Crafts酰化反应中对复合催化剂进行了评估。通过实验设计研究了反应温度和苯甲醚与酰化剂的比例对苯甲醚酰化的影响。结果表明,以1.2ILc@Bi(10)-SBA-16为催化剂,苯甲醚的转化率为85.41%,芳香族酮的收率为69。在100℃的反应温度,0.5g的催化剂用量,4小时的时间和1∶1.5的摩尔比的条件下为19%。经过5次循环运行后,反应物转化率和产物收率的总体降低幅度不超过7
Convenient synthesis of various ionic liquids from onium hydroxides and ammonium salts
作者:Yanqing Peng、Guiyun Li、Jianguo Li、Shaojun Yu
DOI:10.1016/j.tetlet.2009.05.015
日期:2009.7
Hydroxide ionic liquids, such as 1-alkyl-3-methylimidazolium hydroxides, undergo smooth anion metathesis with ammonium salts to produce a variety of ionic liquids in excellent yields. It is a practical supplement of traditional neutralization method due to the broader range of starting materials containing desired anions.
申请人:Pusan National University Industry-University Cooperation Foundation 부산대학교 산학협력단(220040044843) BRN ▼621-82-06530
公开号:KR20150079403A
公开(公告)日:2015-07-08
본 발명은, 질소함유 헤테로고리 화합물 및 아민계 화합물 중 적어도 어느 하나와 음이온염 화합물 및 트리알킬 오르소에스테르(trialkyl orthoester)을 반응시켜 알킬화된 질소를 포함하는 헤테로고리 화합물 또는 아민계 화합물을 제조하는 단계를 포함하는 이온성 액체 제조 방법에 관한 것이다.
This is the translation of the text you provided:
该发明涉及将含氮杂环化合物和胺类化合物中的至少一种与阴离子盐化合物和三烷基正酯(trialkyl orthoester)反应以制备含有烷基化氮的杂环化合物或胺类化合物的离子液体制备方法。
A general and direct synthesis of imidazolium ionic liquids using orthoesters
作者:Do Joong Kim、Kyung Hwan Oh、Jin Kyoon Park
DOI:10.1039/c4gc00684d
日期:——
A general method to synthesize halide and halide-free ionic liquids was developed. Direct alkylation of imidazole and pyridine derivatives was performed in the presence of an acid using an orthoester as the alkyl donor yielding ionic liquid products. Residual Cl and water contents of the ionic liquids were determined by ion chromatography and a Karl-Fisher test.
The invention relates to a process for preparing haloalkanes by reaction of alcohol with hydrogen halide, wherein the reaction of the alcohol with the hydrogen halide occurs in the presence of an ionic liquid at a temperature which is above 100° C. for at least part of the time and, at least at the time of the commencement of the reaction, the water content is not more than 25 mol % based on the amount of liquid, where the ionic liquid is not octyltrimethylammonium chloride.
but also simplifies the reaction conditions in comparison with previous routes. A novel chemical redox route was developed for the preparation of water-miscible imidazolium ionicliquids (ILs). In this method, the reaction between 1-alkyl-3-methylimidazolium bromides or 3-butyl-1-phenylimidazolium bromide and the appropriate acid reactant was promoted by the redox reaction between the bromide ion and