scholarly journals Ionic Liquid Mediated Ugi/SN2 Cyclization: Synthesis of 1,2,3-Triazole Containing Novel 2,5-Diketopiperazines

Proceedings ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 75
Author(s):  
M. V. Basavanag Unnamatla ◽  
Marco A. García-Eleno ◽  
Erick Cuevas Yáñez
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Multicomponent Reaction ◽  
Good Yield ◽  
Room Temperature ◽  
Medicinal Chemistry ◽  
Room Temperature Ionic Liquids ◽  
Sn2 Pathway

The Ugi four-component reaction is versatile multicomponent reaction for generation of complex diversity, herein, we developed a novel methodology by using 4-((1-((tetrahydrofuran-2-yl)methyl)-1H-1,2,3-triazol-4-yl)methoxy)benzaldehyde as one of the components in Ugi 4CR that contains 1,2,3-triazole moiety which is a privileged molecule in medicinal chemistry to obtain Ugi adducts under room temperature ionic liquids as medium of solvent, then followed SN2 pathway cyclization to get triazole containing 2,5-diketopiperazine derivatives in good yield using basic ionic liquids as a catalyst.

Impact of Cationic Molecular Length of Ionic Liquid Electrolytes on Cell Performances of 18650 Supercapacitors

2021 ◽  
Author(s):  
Phatsawit Wuamprakhon ◽  
Ruttiyakorn Donthongkwa ◽  
Kanit Hantanasirisakul ◽  
Vinich Promarak ◽  
Jumras Limtrakul ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Porous Carbon ◽  
Room Temperature ◽  
Series Resistance ◽  
Room Temperature Ionic Liquids ◽  
Specific Cell ◽  
Equivalent Series Resistance ◽  
Molecular Length ◽  
Cell Capacitance

The specific cell capacitance, equivalent series resistance (ESR) and equivalent distributed resistance (EDR) of porous carbon-based supercapacitors linearly depend on the cation molecular length (1 dimension) of room-temperature ionic liquids.

scholarly journals Effect of Room Temperature Ionic Liquids for Electroless Nickel Plating on Acrylonitrile Butadiene Styrene Plastic

2019 ◽  
Vol 25 (3) ◽  
pp. 276-280
Author(s):  
Canan URAZ
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Acrylonitrile Butadiene Styrene ◽  
Electroless Nickel ◽  
Room Temperature Ionic Liquids ◽  
Electroless Nickel Plating ◽  
Nickel Plating ◽  
X Ray ◽  
Butadiene Styrene

In this study, electroless nickel (EN) plating on acrylonitrile butadiene styrene (ABS) engineering plastic using room temperature ionic liquids (RTIL) was studied. Electroless plating is a fundamental step in metal plating on plastic. This step makes the plastic conductive and makes it possible to a homogeneous and hard plating without using any hazardous and unfriendly chemical such as palladium, tin, etc. In the industry there are many distinct chemical materials both catalysts and activation solutions for the electroless bath which is one of the most important parts of the process. In this study the effects of the ionic liquid, plating time, and sand paper size were investigated on electroless nickel plating. The etching and the plating processes were performed with environmentally friendly chemicals instead of the chromic and sulphuric acids used in the traditional processes. Experiments were carried out with and without ionic liquid, EMIC, 1-ethyl-3-methyl imidazolium chloride (C6H11N2Cl), and with 400, 500 and 800 grit sandpaper with the application of the sand attrition process and 70, 80, and 90 °C bath temperatures with 30, 60, and 90 minutes of deposition time. The surface morphology and the thickness of deposit analysis were performed using the Fischer scope X-Ray XDL-B System, X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). Due to the results of the experiments and analysis, the electroless nickel plating on ABS plastic was a success. The best plating was obtained at 5.010 μm as the maximum plating thickness, at 90 min of plating time and 80 °C as the plating bath temperature for electroless nickel plating on ABS plastic whit the surface activated with 800 grit sandpaper using EMIC ionic liquid. DOI: http://dx.doi.org/10.5755/j01.ms.25.3.20116

Novel Ionic Liquid Lubricants for Aerospace and MEMS

2005 ◽  
Author(s):  
Barbara J. Kinzig ◽  
Paul Sutor ◽  
Gregory W. Sawyer ◽  
Alison Rennie ◽  
Pamela Dickrell ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Molten Salts ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Melting Points

Room temperature ionic liquids (RTILs) are molten salts with melting points at or below room temperature. RTILs have recently been recognized as novel lubricants. Only a few have previously been evaluated.

scholarly journals Rechargeable aluminum batteries: effects of cations in ionic liquid electrolytes

RSC Advances ◽  
2019 ◽  
Vol 9 (20) ◽  
pp. 11322-11330 ◽  
Author(s):  
Guanzhou Zhu ◽  
Michael Angell ◽  
Chun-Jern Pan ◽  
Meng-Chang Lin ◽  
Hui Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Solvent Free ◽  
Room Temperature Ionic Liquids ◽  
Liquid Electrolytes

Room temperature ionic liquids (RTILs) are solvent-free liquids comprised of densely packed cations and anions. Properties of Py13Cl–AlCl3 ILs were studied and compared with EMIC-AlCl3 ILs for use as electrolyte in Al–graphite battery.

Microemulsions with an Ionic Liquid Surfactant and Room Temperature Ionic Liquids As Polar Pseudo-Phase

2009 ◽  
Vol 113 (2) ◽  
pp. 465-473 ◽  
Author(s):  
Oliver Zech ◽  
Stefan Thomaier ◽  
Pierre Bauduin ◽  
Thomas Rück ◽  
Didier Touraud ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Ionic Liquid Surfactant

Physicochemical properties of pentaglyme–sodium bis(trifluoromethanesulfonyl)amide solvate ionic liquid

2014 ◽  
Vol 16 (23) ◽  
pp. 11737-11746 ◽  
Author(s):  
Shoshi Terada ◽  
Toshihiko Mandai ◽  
Risa Nozawa ◽  
Kazuki Yoshida ◽  
Kazuhide Ueno ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids

An equimolar complex of pentaglyme (G5) and sodium bis(trifluoromethanesulfonyl)amide (Na[TFSA]) behaves like room-temperature ionic liquids and is a promising electrolyte for Na-ion batteries.

Ruthenium- and Rhodium-catalyzed Carbenoid Reactions of Diazoesters in Hexaalkylguanidinium-based Ionic Liquids

2012 ◽  
Vol 67 (4) ◽  
pp. 347-353 ◽  
Author(s):  
Torsten Large ◽  
Tobias Müller ◽  
Helene Kunkel ◽  
Stefan Buck ◽  
Gerhard Maas
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Reaction Medium ◽  
High Yield ◽  
Room Temperature Ionic Liquids ◽  
Tert Butyl ◽  
Trans Isomerization ◽  
Intermolecular Reaction

Hexaalkylguanidinium-based room-temperature ionic liquids were investigated as solvents for the cyclopropanation of styrene with diazoacetates catalyzed by Rh2(OAc)4 or [Ru2(μ-OAc)2(CO)4]n. While the yields of the formed cyclopropanes are much lower compared to the reactions performed in dichloromethane, the diastereomeric ratio is not significantly affected by the change of the reaction medium. Immobilization of the catalysts is only partially successful. In contrast to this intermolecular reaction, the Ru-catalyzed formation of a β -lactam by an intramolecular carbenoid C-H insertion of an α-methoxycarbonyl-α-diazoacetamide occurs in high yield, similar to the Rh2(OAc)4-catalyzed reaction. The cis → trans isomerization of the resulting 1-tert-butyl-3-methoxycarbonyl-4-phenylazetidin- 2-one is accelerated in the ionic liquid N,N-dibutyl-N’ ,N’-diethyl-N’,N’-dihexylguanidinium triflate.

Dehydration of Fructose to 5-Hydroxymethylfurfural Catalyzed by Alkaline Ionic Liquid

2011 ◽  
Vol 287-290 ◽  
pp. 1585-1590 ◽  
Author(s):  
Yong Shui Qu ◽  
Yan Lei Song ◽  
Chong Pin Huang ◽  
Jie Zhang ◽  
Biao Hua Chen
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Renewable Resources ◽  
Room Temperature ◽  
Maximum Yield ◽  
Catalyst System ◽  
Liquid Fuels ◽  
Room Temperature Ionic Liquids ◽  
The Cost

The preparation of 5-hydroxymethylfurfural (5-HMF) through the dehydration of fructose with room temperature ionic liquids (ILs) has received much attention as a way of producing liquid fuels from renewable resources, but the cost of the process is considerably increased with IL as a solvent rather than as a catalyst. In this work, we have shown that the alkaline Ionic Liquid, 1-Butyl-3-methylimidazolium Hydroxide ([BMIM]OH), can be used as a catalyst in the conversion of fructose to 5-HMF. The maximum yield of 5-HMF was 91.6% at 160 °C after 8 h using dimethylsulfoxide (DMSO) as solvent, and the ketose is more easily dehydrated than aldose in this catalyst system.

Coumarin Synthesis via Knoevenagel Condensation in Moisture Stable Room Temperature Ionic Liquids

2003 ◽  
Vol 2003 (5) ◽  
pp. 294-295 ◽  
Author(s):  
Weiliang Bao ◽  
Zhiming Wang ◽  
Yuxia Li
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Knoevenagel Condensation ◽  
Reaction Medium ◽  
Room Temperature Ionic Liquid ◽  
Room Temperature Ionic Liquids ◽  
Structure System ◽  
Coumarin Synthesis

Several coumarins have been synthesised by Knoevenagel condensation in the piperidine/HOAc/moisture stable room temperature ionic liquid ([Emim]+BF4- referring to structure) system at room temperature; the yield of the reaction is good and the reaction medium can be recycled.

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