Reactivity of hydroxylamine ionic liquid salts in the direct synthesis of caprolactam from cyclohexanone under mild conditions
作者:Zhihui Li、Qiusheng Yang、Liya Gao、Yuanyuan Xu、Dongsheng Zhang、Shufang Wang、Xinqiang Zhao、Yanji Wang
DOI:10.1039/c6ra12918h
日期:——
The reactivity of several sulfobutyl hydrosulfate hydroxylamine ionicliquid salts in direct synthesis of caprolactam from cyclohexanone under mild conditions was investigated. The results showed that the cyclohexanone conversion was...
Efficient One-Pot Synthesis of 2-Alkylquinolines under Solvent-Free Conditions Using Sulfonic Acid Functionalized Ionic Liquid as a Recoverable and Reusable Catalyst
作者:Min Zhang、Yuqiang Ding、Biao Xiong、Ting Wang、Li Wang
DOI:10.3987/com-11-12289
日期:——
Sulfonic acid functionalized ionic liquid (FIL-A) was firstly used as a recoverable and reusable catalyst for the synthesis of 2-alkylquinoline derivatives from simple and readily available alkylaldehydes and arylamines. The method has the advantages of simple experimental procedure, easy recovery and reuse of catalyst, solvent-free and mild reaction conditions, excellent functional group tolerance, etc. which makes it a highly practical and environmentally benign pathway for the synthesis of 2-alkylquinolines.
Aza-Michael reactions in water using functionalized ionic liquids as the recyclable catalysts
作者:X. Liu、M. Lu、G. Gu、T. Lu
DOI:10.1007/bf03245908
日期:2011.9
Some recyclable SO3H-functionalized ionicliquids have been used as catalysts in water for the aza-Michael reactions of amines with α,β-unsaturated compounds to produce β-amino compounds. High yields of the products, short reaction times, mild reaction conditions, simple experimental procedure, reusable catalysts and no obvious loss of the catalytic activity make this protocol a contribution to organic
Green synthesis of benzonitrile using ionic liquid with multiple roles as the recycling agent
作者:Zhihui Li、Tingting Wang、Xudong Qi、Qiusheng Yang、Liya Gao、Dongsheng Zhang、Xinqiang Zhao、Yanji Wang
DOI:10.1039/c9ra02296a
日期:——
benzaldehyde and hydroxylamine hydrochloride is one of the most advantageous approaches. Nevertheless, it suffers from various constraints such as longer reaction time, corrosion and recovery of hydrochloric acid, the use of metal salt catalysts and their separation. For these reasons, a novel green benzonitrile synthetic route was proposed with ionicliquid as the recycling agent in this study. The results indicated
由苯甲醛和盐酸羟胺制备苯腈是最有利的方法之一。然而,它受到各种限制,例如较长的反应时间、腐蚀和盐酸的回收、金属盐催化剂的使用及其分离。为此,本研究提出了一种以离子液体为回收剂的新型绿色苄腈合成路线。结果表明,羟胺1-磺丁基吡啶硫酸氢盐((NH 2 OH) 2 ·[HSO 3 - b -Py]·HSO 4 )是盐酸羟胺的专家替代品。同时,离子液体[HSO 3 - b -Py]·HSO 4表现出助溶剂、催化和相分离的多重作用,因此取消了金属盐催化剂的使用,不需要额外的催化剂。因此,分离过程大大简化。当苯甲醛与(NH 2 OH) 2 ·[HSO 3 - b -Py]·HSO 4的摩尔比为1:1.5时,对二甲苯与[HSO 3 - b -Py]·HSO 4的体积比为2:1,苯甲醛转化率和苯腈收率均在120 ℃下2小时100%。更好的是,离子液体可以很容易地通过相分离回收,反应后直接回收利用。此外,该