铜( I )催化的叠氮化物-炔烃环加成(CuAAC)反应在化学合成中受到广泛关注。虽然近年来人们广泛探索使用离子液体(IL)作为合成溶剂,但对其对 CuAAC 反应机理和反应性的影响仍知之甚少。在这里,我们研究了苯乙炔-苄基叠氮化物和乙炔-苄基叠氮化物 CuAAC 反应的动力学,以探讨 IL 结构的影响,包括用于促进反应的碱的作用和水含量的重要性。“湿”离子液体的使用消除了初始诱导期,导致反应动力学曲线发生显着变化。发现反应速率取决于铜( I )源。还研究了添加碱的影响,使用带有叔胺的 IL 可以在环境温度下 5 分钟内实现高转化。这项研究的结果强调了离子液体中 CuAAC 反应的性质和复杂性。随着越来越多的离子液体参与工业过程,从这项研究中获得的数据对于更好地了解影响离子液体介质中 CuAAC 反应的过程以及创建有机合成定制系统非常有价值,从而提高此类过程的效率和可持续性。
A silver and water free metathesis reaction: a route to ionic liquids
作者:Hassan Srour、Hélène Rouault、Catherine C. Santini、Yves Chauvin
DOI:10.1039/c3gc37034h
日期:——
A versatile, cheaper, silver and water-free metathesis reaction was developed for imidazolium, phosphonium and pyrrolidinium based ionic liquids (ILs) associated with different anions such as dicyanamide, thiocyanate, tetrafluoroborate and bis(trifluoromethylsulfonyl)imide. This route, using the melt of amine chloride as a solvent and reagent, favours the ion exchange reaction using anion salts of
Synthesis and Properties of Seven Ionic Liquids Containing 1-Methyl-3-octylimidazolium or 1-Butyl-4-methylpyridinium Cations
作者:Nicolas Papaiconomou、Neal Yakelis、Justin Salminen、Robert Bergman、John M. Prausnitz
DOI:10.1021/je060096y
日期:2006.7.1
Syntheses are reported for ionic liquids containing 1-methyl-3-octylimidazolium or 1-butyl-4-methylpyridinium cations and trifluoromethyl sulfonate, dicyanamide, bis(trifluoromethylsulfonyl) imide, or nonafluorobutyl sulfonate anions. Densities, melting points, glass-transition temperatures, solubilities in water, and polarities have been measured. Ionic liquids containing pyridinium cations exhibit higher melting points, lower solubility in water, and higher polarity than those containing imidazolium cations.