An effective and environment-friendly system for Cu NPs@RGO-catalyzed C–C homocoupling of aryl halides or arylboronic acids in ionic liquids under microwave irradiation

RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 41108-41113 ◽  
Author(s):  
Hongyan Zhao ◽  
Guijie Mao ◽  
Huatao Han ◽  
Jinyi Song ◽  
Yang Liu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Aryl Halides ◽  
Green Solvent ◽  
Environment Friendly ◽  
Arylboronic Acids

Cu NPs@RGO can effectively catalyze Ullmann C–C homocoupling of aryl halides and arylboronic acids under microwave irradiation in green solvent ionic liquid..

Synthesis of Medicinally Relevant Scaffolds-Triazoles and Pyrazoles in Green Solvent Ionic Liquids

2021 ◽  
Vol 25 ◽  
Author(s):  
Parmita Phukan ◽  
Diganta Sarma
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Public Sector ◽  
Chemical Industry ◽  
Constant Pressure ◽  
Energy Sources ◽  
Green Solvent ◽  
Efficient Synthesis ◽  
Environment Friendly ◽  
Tremendous Importance

: The use of natural and environment friendly energy sources for betterment of the living society has become an active concern in both government and public sector. Due to this, responsible use of global resources has become a growing concern among people. Similarly, in chemical industry especially in pharmaceutical fields, there is constant pressure in reducing hazardous organic solvents and environmentally detrimental laboratory materials. The use of ionic liquids in efficient synthesis of a wide array of fundamentally important structural motifs has gained tremendous importance in the scientific era. In this review, synthesis of two such medicinally relevant moieties, namely, triazole and pyrazole, in green and sustainable ionic liquid have been discussed.

A catalyst-free protocol for the green and efficient condensation of indoles with aldehydes in ionic liquids

2009 ◽  
Vol 87 (2) ◽  
pp. 416-421 ◽  
Author(s):  
Abdolkarim Zare ◽  
Abolfath Parhami ◽  
Ahmad Reza Moosavi-Zare ◽  
Alireza Hasaninejad ◽  
Ali Khalafi-Nezhad ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Reaction Times ◽  
Aliphatic Aldehydes ◽  
Catalyst Free

Indoles are efficiently condensed with aromatic and aliphatic aldehydes in the absence of any catalyst in ionic liquid 1-butyl-3-methylimidazolium bromide {bmim]Br} under microwave irradiation to afford bis(indolyl)methanes in good to excellent yields and in short reaction times.

scholarly journals PRAVADOLINE SYNTHESIS USING AN IMIDAZOLIUM-BASED IONIC LIQUID AS A GREEN SOLVENT

2011 ◽  
Vol 14 (3) ◽  
pp. 79-86
Author(s):  
Nam Thanh Son Phan ◽  
Ha Vu Le
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Acid Catalyst ◽  
High Yield ◽  
Viet Nam ◽  
Pharmaceutical Chemical ◽  
Green Solvents ◽  
Green Solvent ◽  
1H And 13C Nmr ◽  
Lewis Acid Catalyst

An easily accessible ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) was synthesized, and characterized using 1H and 13C NMR, and MS. The ionic liquid was demonstrated to be an efficient green solvent for the synthesis of pravadoline, one of non-steroidal drugs. High yield was achieved without the presence of an anhydrous Lewis acid catalyst. The reaction was also successfully carried out using other imidazolium-based ionic liquids, including 1-hexyl-3-methylimidazolium hexafluorophosphate ([HMIM][PF6]), and 1-octyl-3- methylimidazolium hexafluorophosphate ([OMIM][PF6]). To our best knowledge, this is the first report in Viet Nam on the synthesis of a pharmaceutical chemical in ionic liquids as green solvents.

Green Biodiesel Production Catalyzed by Basic Ionic Liquid

2013 ◽  
Vol 291-294 ◽  
pp. 379-382 ◽  
Author(s):  
Yong Gang Guo ◽  
Bao Hua Huang ◽  
Na Shi ◽  
Xiao Zhong Ma ◽  
Yan Ping Huo ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Processing Time ◽  
Biodiesel Production ◽  
Efficient Catalyst ◽  
Basic Ionic Liquid ◽  
Alkyl Side Chains ◽  
Biphasic Systems ◽  
Operational Simplicity

Transesterification were carried out under microwave irradiation conditions and the effects of imidazolium hydroxide with different branched alkyl side-chains ([Cnmim]OH, n = 2, 3, 4) were investigated. The results showed that less than conventional amount of NaOH, and the alkaline ionic liquids formed clearly biphasic systems immediately after the transesterification of soybean oil with methanol was finished. The method offers significant improvement over conventional techniques in terms of operational simplicity, processing time reduction and excellent yields. Among the imidazolium salts studied, [C2mim]OH proved to be the most efficient catalyst, affording 96 % yield.

Capture of CO2 by [bmim]PF6 Ionic Liquid under Normal Temperature and Pressure Conditions

2011 ◽  
Vol 347-353 ◽  
pp. 116-119
Author(s):  
Qiang Wei Li ◽  
Yi Zhao ◽  
Li Dong Wang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Low Temperature ◽  
Absorption Capacity ◽  
Green Solvent ◽  
Absorption Process ◽  
Chemical Absorption ◽  
Saturated Absorption ◽  
Absorption Time ◽  
Temperature And Pressure

Subscript textCO2 emission control is an important issue, in which chemical absorption process has reached the widest application. Ionic liquid is a kind of green solvent and expected to take the place of traditional amine absorbents as for its better characteristics. In this paper, two iminazole base ionic liquids were synthesized, including of bromide 1-butyl-3-methylimidazo ([bmim]Br) and 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]PF6). The performance of CO2 absorption by [bmim]PF6 and [bmim]Br were compared under the same other conditions. Subscript textIt indicates that [bmim]PF6 has more absorption capacity and less saturated absorption time under low temperature, which provides reference for CO2 control by ionic liquid.

scholarly journals Organic Reactions in Ionic Liquids: Ionic Liquid-accelerated Facile Synthesis of 3-alkyl-2,4-thiazolidinediones

2005 ◽  
Vol 2005 (8) ◽  
pp. 492-494 ◽  
Author(s):  
De-Hong Yang ◽  
Ben-Yong Yang ◽  
Zhen-Chu Chen ◽  
Song-Ying Chen ◽  
Qin-Guo Zheng
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Organic Reactions ◽  
Green Solvent ◽  
Facile Synthesis ◽  
Rate Enhancement ◽  
Significant Rate

The room temperature ionic liquid [bmim]PF6 is a new green solvent for the N-alkylation of 2,4-thiazolidinones. Significant rate enhancement and improved yields have been observed.

A systematic visual methodology to design ionic liquids and ionic liquid mixtures: Green solvent alternative for carbon capture

2016 ◽  
Vol 91 ◽  
pp. 219-232 ◽  
Author(s):  
Fah Keen Chong ◽  
Fadwa T. Eljack ◽  
Mert Atilhan ◽  
Dominic C.Y. Foo ◽  
Nishanth G. Chemmangattuvalappil
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Carbon Capture ◽  
Liquid Mixtures ◽  
Green Solvent ◽  
Visual Methodology

scholarly journals Energy efficient microwave synthesis of mesoporous Ce0.5M0.5O2 (Ti, Zr, Hf) nanoparticles for low temperature CO oxidation in an ionic liquid – a comparative study

2015 ◽  
Vol 39 (2) ◽  
pp. 1339-1347 ◽  
Author(s):  
Tarek Alammar ◽  
Ying-Kit Chow ◽  
Anja-Verena Mudring
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Low Temperature ◽  
Microwave Irradiation ◽  
Comparative Study ◽  
Co Oxidation ◽  
Microwave Synthesis ◽  
Energy Efficient ◽  
Low Temperature Co Oxidation

Synthesis of Ce0.5M0.5O2 (M = Ti, Zr, Hf) nanoparticles in ionic liquids by microwave irradiation is an efficient and mild way to obtain efficient catalyts for CO oxidation.

Ionic Liquids and Poly (Ionic Liquid)s Used as Green Solvent and Ultrasound Responded Materials

2017 ◽  
pp. 327-346
Author(s):  
Kai Li ◽  
Takaomi Kobayashi
Keyword(s):  
Ionic Liquid ◽  
Hydrogen Bonding ◽  
Ionic Liquids ◽  
Ir Spectroscopy ◽  
Green Chemistry ◽  
Two Dimensional ◽  
Green Solvent ◽  
Ft Ir ◽  
Responsive Behavior ◽  
Poly Ionic Liquid

Ionic liquids (ILs) have been known as a class of green solvent and played an important role in green chemistry in recently years. Materials based on ILs, such as poly(ionic liquid) and polymer/ILs composites, are also widely investigated and possess many unique properties and applications. In this chapter, green solvent IL is reviewed and the responsive behavior of ILs based materials to external stimulus, like ultrasound (US), is introduced. Especially, it is described that FT-IR spectroscopy was effective for analyzing hydrogen bonding in ILs, polymeric ILs and PVA/IL composites. In addition, shear viscosity and viscoelasticity measurement and techniques of two-dimensional correlation and deconvolution are applied to analyze the change of interaction between IL to different substances and US responded behavior.

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