Ionic liquids containing an ester group as potential electrolytes

1-(2-Methacryloyloxy)ethyl-3-butylimidazolium bromide, a kind of functional ionic liquid containing ester group, was synthesized by two synthesis methods, denoted as thermal heating method and ultrasonic-assisted method. The optimal synthesis condition of the thermal heating method is discussed. Comparison of the two methods shows that ultrasound significantly enhances the efficiency of the reaction. The ultrasonic-assisted method is quite promising in synthesis of ionic liquids with mild condition and high efficiency.

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Functionalized Ionic Liquids as Lubricants for Steel-Steel Contact

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.138-139.630 ◽

2011 ◽

Vol 138-139 ◽

pp. 630-634 ◽

Cited By ~ 2

Author(s):

Li Ye Zhu ◽

Li Gong Chen ◽

Xin Yang ◽

Hong Bin Song

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Physicochemical Properties ◽

Tribological Properties ◽

Friction And Wear ◽

Friction Mechanisms ◽

Ester Group ◽

Friction Reducing

A new series of functionalized ionic liquids containing ester-group were synthesized through a typical two-step way. The physicochemical properties of the functionalized ionic liquids were studied and the tribological properties of them as lubricants for steel-steel contact were evaluated on an SRV friction and wear tester and compared with the perfluoroalkylpolyether (PFPE), a low-volatility and fluorine containing lubricant, and a conventional ionic liquid, 1-butyl-3-methy imidazolium tetrafluoroborate (LB104), which is nonfunctionalized. Results showed that all the ionic liquids studied in this paper have better lubricities than PFPE as lubricants for steel-steel friction pairs. Functionalized ionic liquids show worse friction reducing abilities at relatively lower loads, which could be ascribed to their higher viscosities, but they always exhibit better anti-wear abilities than LB104. The possible friction mechanisms were discussed.

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Alcoholysis Versus Fission of the Ester Group During the Reaction of Dialkyl Phenylphosphonates in the Presence of Ionic Liquids

Current Organic Chemistry ◽

10.2174/1385272825666210212115649 ◽

2021 ◽

Vol 25 (7) ◽

pp. 842-848

Author(s):

Nikoletta Harsági ◽

Csilla Bertha ◽

Nóra Zsuzsa Kiss ◽

Réka Henyecz ◽

Petra Regina Varga ◽

...

Keyword(s):

Ionic Liquids ◽

Ester Group ◽

Microwave Assisted ◽

Alkoxy Groups

In the microwave-assisted alcoholysis of dialkyl phenylphosphonates performed in the presence of suitable ionic liquids, such as [bmim][BF4] or [bmim][PF6], affording the phosphonate with mixed alkoxy groups and the fully transesterified product, the fission of the phosphonate function to the ester-acid or diacid moiety was inevitable. Moreover, in the presence of [emim][HSO4], the reaction could be performed to afford the phosphonic esteracid with a selectivity of 66% and the diacid with a selectivity of 97%. The ester-acids provided by the new protocol may be valuable intermediates.

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Anion-controlled supramolecular crystal structures and ionic liquids from fatty acid-substituted ethyl-nicotinate ionic compounds

CrystEngComm ◽

10.1039/c8ce00785c ◽

2018 ◽

Vol 20 (45) ◽

pp. 7248-7255

Author(s):

Wei-Jie Chang ◽

Padi Yi-Syong Su ◽

Kwang-Ming Lee

Keyword(s):

Ionic Liquids ◽

Fatty Acid ◽

Crystal Structures ◽

Ester Group ◽

Ethyl Nicotinate ◽

Ionic Compounds

A series of bio-inspired fatty acid-substituted ethyl-nicotinate ionic compounds with a flexible ester group were prepared, and two crystals and four ionic liquids were obtained.

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