Solubilization of seven hydrophobic pesticides in quaternary ammonium based eco-friendly ionic liquid aqueous systems

2017 ◽  
Vol 41 (19) ◽  
pp. 10598-10606 ◽  
Author(s):  
Chong Chen ◽  
Fengmao Liu ◽  
Tengfei Fan ◽  
Qizhen Zhou ◽  
Qingrong Peng
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvents ◽  
Quaternary Ammonium ◽  
Aqueous Systems ◽  
Pesticide Formulation

Quaternary ammonium based ionic liquids can be used as eco-friendly solvents/solubilizers for pesticide formulation processing without organic solvents.

Ionic Liquid Promoted Eco-friendly and Efficient Synthesis of Six-membered Npolyheterocycles

2018 ◽  
Vol 15 (8) ◽  
pp. 1124-1146 ◽  
Author(s):  
Navjeet Kaur
Keyword(s):  
Organic Chemistry ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvents ◽  
Review Article ◽  
Environmentally Benign ◽  
Wide Range ◽  
Catalyzed Reactions ◽  
Metal Catalyzed ◽  
Reaction Media

Background: The synthesis of N-polyheterocycles by environmentally benign method is highly attractive but challenging proposition. New strategies have been developed for the preparation of polycyclic heterocycles in the last decades. In this review article, the synthesis of nitrogen containing six-membered polycyclic heterocyclic compounds is presented with the application of ionic liquids. This contribution focuses on the literature related to the total synthesis of six-membered N-polyheterocycles. Objective: Ionic liquids not only acted as environmentally benign reaction media but also as catalysts which afforded the very promising replacements of traditional molecular solvents in organic chemistry due to their stability, non-flammability, non-volatility and ease of recyclability. Ionic liquids are utilized in metal catalyzed reactions in place of organic solvents in the last years. It has attracted considerable attention in recent years. Ionic liquids acted as alternatives of organic solvents and these ILs are environment friendly. Conclusion: In the area of green chemistry ionic liquid assisted synthesis is a very promising technique which afforded a flexible platform for the formation of heterocycles. The influence of ILs on the development of efficient and new synthetic protocols over the last decade for the construction of N-polyheterocycles is featured in this review article. These synthetic strategies will continue to attract more attention and will find a wide range of applications in organic synthesis. In conclusion, ionic liquids assisted syntheses have become an efficient and powerful tool in organic chemistry quickly.

A Phosphine-mediated Synthesis of 2,3,4,5-tetra-substituted Nhydroxypyrroles from α-oximino Ketones and Dialkyl Acetylenedicarboxylates Under Ionic Liquid Green-media

2018 ◽  
Vol 21 (1) ◽  
pp. 14-18
Author(s):  
Ashraf S. Shahvelayati ◽  
Maryam Ghazvini ◽  
Khadijeh Yadollahzadeh ◽  
Akram S. Delbari
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvents ◽  
Condensation Reaction ◽  
Reaction Medium ◽  
Sustainable Chemistry ◽  
Polyfunctional Compounds ◽  
High Yields ◽  
Work Up ◽  
Reaction Media

Background: The development of multicomponent reactions (MCRs) in the presence of task-specific ionic liquids (ILs), used not only as environmentally benign reaction media, but also as catalysts, is a new approach that meet with the requirements of sustainable chemistry. In recent years, the use of ionic liquids as a green media for organic synthesis has become a chief study area. This is due to their unique properties such as non-volatility, non-flammability, chemical and thermal stability, immiscibility with both organic compounds and water and recyclability. Ionic liquids are used as environmentally friendly solvents instead of hazardous organic solvents. Objective: We report the condensation reaction between α-oximinoketone and dialkyl acetylene dicarboxylate in the presence of triphenylphosphine to afford substituted pyrroles under ionic liquid conditions in good yields. Result: Densely functionalized pyrroles was easily prepared from reaction of α-oximinoketones, dialkyl acetylene dicarboxylate in the presence of triphenylphosphine in a quantitative yield under ionic liquid conditions at room temperature. Conclusion: In conclusion, ionic liquids are indicated as a useful and novel reaction medium for the selective synthesis of functionalized pyrroles. This reaction medium can replace the use of hazardous organic solvents. Easy work-up, synthesis of polyfunctional compounds, decreased reaction time, having easily available-recyclable ionic liquids, and good to high yields are advantages of present method.

scholarly journals Colloidal nickel/gallium nanoalloys obtained from organometallic precursors in conventional organic solvents and in ionic liquids: noble-metal-free alkyne semihydrogenation catalysts

Nanoscale ◽  
2014 ◽  
Vol 6 (10) ◽  
pp. 5532-5544 ◽  
Author(s):  
Kai Schütte ◽  
Adinarayana Doddi ◽  
Clarissa Kroll ◽  
Hajo Meyer ◽  
Christian Wiktor ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvents ◽  
Noble Metal ◽  
Recyclable Catalyst ◽  
Metal Free ◽  
Organometallic Precursors

The Hume-Rothery phase NiGa as nanoparticles in an ionic liquid is a recyclable catalyst for selective semihydrogenation with yields of about 90% and selectivities of up to 94%.

scholarly journals Electrospun Silk-Cellulose Composite Nanomaterials Using Ionic Liquid Regenerated Films

Proceedings ◽  
2020 ◽  
Vol 69 (1) ◽  
pp. 31
Author(s):  
Ashley Rivera-Galletti ◽  
Ye Xue ◽  
Stacy Love ◽  
David Salas de la Cruz ◽  
Xiao Hu
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvents ◽  
Raw Materials ◽  
Composite Films ◽  
Structural Defects ◽  
Composite Nanomaterials ◽  
Cellulose Derivatives ◽  
Cellulose Content ◽  
Cellulose Nanomaterials

Electrospinning is a widely used technique to draw recalcitrant biopolymer solutions into micro to nanoscale materials in a simple and economical way. The first focus of this research involved using ionic liquids as a non-volatile solvent for natural insoluble biopolymers such as silk and cellulose (or cellulose derivatives). Compared to traditional organic solvents, ionic liquids can dissolve biopolymers without altering the molecular weight of the biopolymer. In this study, 1-ethyl-3-methylimidizolium acetate (EMIMAc) ionic liquid was used and the regenerated films were coagulated in baths of EtOH or water. The second focus of this research explored the dissolution of IL-regenerated composites into organic solvents and their electrospun composite nanomaterials. Various ratios of silk-cellulose bio-composite films regenerated from ionic liquids were used as the raw materials and sequentially dissolved/dispersed into a Formic Acid-CaCl2 solution in order to initiate the electrospinning of silk-cellulose nanomaterials. Because of the variability of ionic liquids, the nanomaterials produced using this technique have unique and tunable properties such as large surface area to volume ratios and low structural defects. FTIR and SEM results suggest that the structure and morphology of the final nanosized samples becomes more globular when the biopolymer composition ratio has increased cellulose content. TGA results demonstrated that the electrospun materials have better thermal stability than the original films. This two-step electrospinning method, using ionic liquid as a non-volatile solvent to first dissolve and mix raw natural materials, may lead to extensive research into its biomedical and pharmaceutical applications in the future.

Hydrophilic Ionic Liquids in the Synthesis of Hantzsch Ester

2011 ◽  
Vol 50 (3-4) ◽  
pp. 277-283 ◽  
Author(s):  
S. Pavlovica ◽  
E. Gzibovska ◽  
A. Zicmanis ◽  
P. Mekss ◽  
M. Klavins
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvents ◽  
Heterocyclic Compound ◽  
Reaction Rates ◽  
Ester Synthesis ◽  
Low Toxicity ◽  
The Relationship

Hydrophilic Ionic Liquids in the Synthesis of Hantzsch Ester Hantzsch ester synthesis was investigated using (2-hydroxyethyl)-ammonium carboxylates, polar and hydrophilic ionic liquids possessing low toxicity and high biodegradability. The reaction rates and yields of the products in ionic liquids were greater than those in common organic solvents. The relationship between the structure of the ionic liquid used and the structure of the heterocyclic compound was investigated.

scholarly journals Thermoresponsive polyelectrolytes derived from ionic liquids

2015 ◽  
Vol 6 (12) ◽  
pp. 2163-2178 ◽  
Author(s):  
Yuki Kohno ◽  
Shohei Saita ◽  
Yongjun Men ◽  
Jiayin Yuan ◽  
Hiroyuki Ohno
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvents ◽  
Recent Progress ◽  
Phase Behaviour ◽  
Potential Applications

In this review we summarise recent progress on the design, properties, and potential applications of ionic liquid-derived polyelectrolytes showing thermoresponsive phase behaviour after mixing with water or other organic solvents.

Enhanced low-temperature ionic conductivity via different Li+ solvated clusters in organic solvent/ionic liquid mixed electrolytes

2016 ◽  
Vol 18 (36) ◽  
pp. 25458-25464 ◽  
Author(s):  
Luis Aguilera ◽  
Johan Scheers ◽  
Aleksandar Matic
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Low Temperature ◽  
Organic Solvent ◽  
Organic Solvents ◽  
Phase Behaviour ◽  
Mixed Electrolytes ◽  
Macroscopic Properties

We investigate Li+ coordination in mixed electrolytes based on ionic liquids (ILs) and organic solvents and its relation with the macroscopic properties such as phase behaviour and ionic conductivity.

Carotenoids obtained by an ionic liquid mediated process display anti-inflammatory response in adipose tissue-liver axis

2021 ◽  
Author(s):  
Leonardo Mendes de Souza Mesquita ◽  
Breno P. Casagrande ◽  
Aline Santamarina ◽  
Marcela N. Sertorio ◽  
Daniel Vitor de Sousa ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Adipose Tissue ◽  
Ionic Liquids ◽  
Inflammatory Response ◽  
Organic Solvents ◽  
Sustainable Solvents ◽  
Volatile Organic ◽  
Anti Inflammatory

Ionic liquids (ILs) have been proposed as more efficient and sustainable solvents to replace volatile organic solvents (VOS). However, the drawbacks associated to their use are still limiting the regular...

scholarly journals PURIFICATION OF 1-BUTYL-3-METHYLIMIDAZOLIUM CHLORIDE AFTER DISSOLUTION OF WHEAT STRAW

2018 ◽  
Vol 61 (3) ◽  
pp. 83
Author(s):  
Sergei N. Evstaf’ev ◽  
Cuong Q Hoang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Activated Carbon ◽  
Wheat Straw ◽  
Organic Solvents ◽  
Supercritical Co2 ◽  
Liquid Extraction ◽  
Lignocellulosic Materials ◽  
Supercritical Co2 Extraction ◽  
Actual Problem

The existing technologies for the extraction of polysaccharides and lignin from lignocellulosic materials from an ecological and economic point of view are imperfect. The solution of this actual problem at present day is possible by heat treatment of lignocellulosic materials at the atmospheric pressure and relatively low temperature in the environment of ionic liquids. The use of ionic liquids for the fractionation of lignocellulosic raw materials isn't found industrial application because of their relatively high cost and sensitivity to contamination, despite the unique set of physico-chemical properties for dissolving cellulose. The solution of the problem is possible by reusing ionic liquid in the technological process without losing their effectiveness, which requires purification from impurities. The purpose of thе work was the comparative research of the efficiency of purification of 1-butyl-3-methylimidazolium chloride by adsorption on activated carbon, liquid extraction by organic solvents (benzene, dioxane, tetrahydrofuran) and supercritical CO2 extraction. It has been established that the methods of liquid extraction, supercritical CO2 extraction and adsorption on activated carbon can be used to purify 1-butyl-3-methylimidazolium chloride from extractives of wheat straw. For the purpose of comparison of efficiency of purification with above-mentioned methods the GC-MS, IR- and 1H NMR spectroscopy were used. It was revealed that extraction of impurities by organic solvents, such as benzene, dioxane and tetrahydrofuran, allows to reduce significantly their content in ionic liquid while supercritical CO2-extraction and adsorption on activated carbon almost completely remove impurities. Considering the substantial losses of the ionic liquid when using adsorption to purify 1-butyl-3-methylimidazolium chloride from the extractives of wheat straw, a supercritical CO2 extraction method can be recommended for use.Forcitation:Evstaf’ev S.N., Hoang C.Q. Purification of 1-butyl-3-methylimidazolium chloride after dissolution of wheat straw. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 3. P. 83-87

scholarly journals Polyborane reactions in ionic liquids

2006 ◽  
Vol 78 (7) ◽  
pp. 1349-1355 ◽  
Author(s):  
Yuqi Li ◽  
Upal Kusari ◽  
Patrick J. Carroll ◽  
Mark G. Bradley ◽  
Larry G. Sneddon
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvents ◽  
Reaction Medium ◽  
High Yield ◽  
Insertion Reactions ◽  
Cage Compounds ◽  
Alkyne Insertion

In contrast to reactions that have been observed in traditional organic solvents, decaborane olefin-hydroboration and alkyne-insertion reactions proceed in ionic liquid (IL) solvents without the need of a catalyst. These reactions now provide important new, high-yield synthetic pathways to functionalized decaborane and ortho-carborane clusters. As illustrated by the synthesis of n-B18H22, ILs can also provide an inert reaction medium for carrying out dehydrocondensation reactions leading to higher fused cage compounds.

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