New Ionic Liquids from Natural Products for Environmentally Benign Aircraft Deicing and Anti-Icing

2010 ◽  
Author(s):  
Matthew C. Davis
Keyword(s):  
Natural Products ◽  
Ionic Liquids ◽  
Environmentally Benign

scholarly journals Non-Enzymatic Desymmetrization Reactions in Aqueous Media

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 720
Author(s):  
Satomi Niwayama
Keyword(s):  
Natural Products ◽  
Total Synthesis ◽  
Functional Groups ◽  
Organic Compounds ◽  
Recent Progress ◽  
Aqueous Media ◽  
Building Blocks ◽  
Organic Reactions ◽  
Environmentally Benign ◽  
Enzymatic Desymmetrization

Symmetric organic compounds are generally obtained inexpensively, and therefore they can be attractive building blocks for the total synthesis of various pharmaceuticals and natural products. The drawback is that discriminating the identical functional groups in the symmetric compounds is difficult. Water is the most environmentally benign and inexpensive solvent. However, successful organic reactions in water are rather limited due to the hydrophobicity of organic compounds in general. Therefore, desymmetrization reactions in aqueous media are expected to offer versatile strategies for the synthesis of a variety of significant organic compounds. This review focuses on the recent progress of desymmetrization reactions of symmetric organic compounds in aqueous media without utilizing enzymes.

Separation of phenols from oils using deep eutectic solvents and ionic liquids

2020 ◽  
Vol 92 (10) ◽  
pp. 1717-1731
Author(s):  
Yucui Hou ◽  
Zhi Feng ◽  
Jaime Ruben Sossa Cuellar ◽  
Weize Wu
Keyword(s):  
Ionic Liquids ◽  
Phenolic Compounds ◽  
High Efficiency ◽  
Deep Eutectic Solvents ◽  
Environmentally Benign ◽  
Organic Chemical ◽  
Environmental Friendliness ◽  
Oil Mixtures ◽  
Organic Chemical Industry

AbstractPhenolic compounds are important basic materials for the organic chemical industry, such as pesticides, medicines and preservatives. Phenolic compounds can be obtained from biomass, coal and petroleum via pyrolysis and liquefaction, but they are mixtures in oil. The traditional methods to separate phenols from oil using alkaline washing are not environmentally benign. To solve the problems, deep eutectic solvents (DESs) and ionic liquids (ILs) have been developed to separate phenols from oil, which shows high efficiency and environmental friendliness. In this article, we summarized the properties of DESs and ILs and the applications of DESs and ILs in the separation of phenols and oil. There are two ways in which DESs and ILs are used in these applications: (1) DESs formed in situ using different hydrogen bonding acceptors including quaternary ammonium salts, zwitterions, imidazoles and amides; (2) DESs and ILs used as extractants. The effect of water on the separation, mass transfer dynamics in the separation process, removal of neutral oil entrained in DESs, phase diagrams of phenol + oil + extractant during extraction, are also discussed. In the last, we analyze general trends for the separation and evaluate the problematic or challenging aspects in the separation of phenols from oil mixtures.

Applications of Ionic Liquids in Green Catalysis: A Review of Recent Efforts

2021 ◽  
Vol 10 ◽  
Author(s):  
Abhra Sarkar ◽  
Siddharth Pandey
Keyword(s):  
Ionic Liquids ◽  
Environmentally Benign ◽  
Successful Implementation ◽  
Enzymatic Reactions ◽  
Chemical Transformations ◽  
Benign Solvents ◽  
Metallic Compounds ◽  
Green Catalysis ◽  
Reduction Of Co2

: Ionic Liquids (ILs) in their neoteric form have emerged to be a potential ‘green’ alternative of traditional Volatile Organic Compounds (VOCs) as solvents in different fields of industries and academia. Recent investigations on the development of multi-faceted applications of ionic liquids have revealed that they really stand for “environmentally-benign” solvents as far as their impact on the ecology is concerned. This caused them to be an exciting and lucrative subject to explore more and more, and many research groups are involved in the manifestation of their inherent undisclosed legacy. Recently, there has been a huge jump in search of an alternative to conventional metal catalysts in academia as well as in industries due to their pollution-evoking roles. Scientists have explored multiple numbers of homogeneous or heterogeneous mixtures of catalysts incorporating ionic liquids to reduce the extent of contamination in our global environment produced due to catalytic synthesis and chemical transformations. In this review, we have put our concentration on some beneficial and recently explored aspects of the successful implementation of Ionic Liquids in different forms in several fields of catalysis as a ‘green’ alternative catalyst/co-catalyst/solvent for catalysis to replace or minimize the lone and hazardous use of metal and metallic compounds as catalysts as well as chemicals like mineral acids or VOCs as solvents. Here, our study focuses on the inevitable role of ILs in several catalytic reactions like cycloaddition of CO2, electrolytic reduction of CO2, biocatalytic or enzymatic reactions, some of the important organic conversions, and biomass to biofuel conversion as catalysts, cocatalysts, catalyst activator, and solvents.

scholarly journals Electrocarboxylation of 1-chloro-(4-isobutylphenyl)ethane with a silver cathode in ionic liquids: an environmentally benign and efficient way to synthesize Ibuprofen

RSC Advances ◽  
2019 ◽  
Vol 9 (26) ◽  
pp. 15115-15123 ◽  
Author(s):  
Silvia Mena ◽  
Jessica Sanchez ◽  
Gonzalo Guirado
Keyword(s):  
Ionic Liquids ◽  
Environmentally Friendly ◽  
Environmentally Benign ◽  
Green Technologies ◽  
Environmentally Friendly Approach ◽  
Silver Cathode

A new more environmentally friendly approach for synthesising Ibuprofen by using green technologies (electrochemistry and ionic liquids) and CO2 feedstock.

scholarly journals Studies on the Solubility of Terephthalic Acid in Ionic Liquids

Molecules ◽  
2019 ◽  
Vol 25 (1) ◽  
pp. 80 ◽  
Author(s):  
Karolina Matuszek ◽  
Ewa Pankalla ◽  
Aleksander Grymel ◽  
Piotr Latos ◽  
Anna Chrobok
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Temperature Effect ◽  
Industrial Production ◽  
Terephthalic Acid ◽  
Liquid Structure ◽  
Environmentally Benign ◽  
Low Solubility ◽  
Solvent Properties

Low solubility of terephthalic acid in common solvents makes its industrial production very difficult and not environmentally benign. Ionic liquids are known for their extraordinary solvent properties, with capability to dissolve a wide variety of materials, from common solvents to cellulose, opening new possibilities to find more suitable solvents for terephthalic acid. This work presents studies on the solubility of terephthalic acid in ionic liquids, and demonstrates that terephthalic acid is soluble in ionic liquids, such as 1-ethyl-3-methylimidazolium diethylphosphate, 1-butyl-3-methylimidazolium acetate, and dialkylimidazolium chlorides up to four times higher than in DMSO. Additionally, the temperature effect and correlation of ionic liquid structure with solubility efficiency are discussed.

Enantiospecific total syntheses of meroterpenoids (−)-F1839-I and (−)-corallidictyals B and D

2017 ◽  
Vol 15 (1) ◽  
pp. 65-68 ◽  
Author(s):  
Dattatraya H. Dethe ◽  
Balu D. Dherange ◽  
Saghir Ali ◽  
Mahesh M. Parsutkar
Keyword(s):  
Natural Products ◽  
Lewis Acid ◽  
Bond Formation ◽  
Environmentally Benign ◽  
Formation Reaction ◽  
Total Syntheses

Enantiospecific total syntheses of spiromeroterpenoid natural products (−)-F1839-I and (−)-corallidictyals B and D were achieved using the environmentally benign and highly atom economical Lewis acid catalysed Friedel–Crafts reaction and a highly regio- and stereoselective spirocyclic C–O bond formation reaction.

Extraction of natural products from bark of Betula pendula using ionic liquids

Metabolomics ◽  
2017 ◽  
Vol 13 (11) ◽  
Author(s):  
Nadine Strehmel ◽  
David Strunk ◽  
Veronika Strehmel
Keyword(s):  
Natural Products ◽  
Ionic Liquids ◽  
Betula Pendula

One Pot Three Component Synthesis of 9-arylpolyhydroacridine Derivatives in an Ionic Liquid Medium

2005 ◽  
Vol 2005 (9) ◽  
pp. 600-602 ◽  
Author(s):  
Yu-Ling Li ◽  
Mei-Mei Zhang ◽  
Xiang-Shan Wang ◽  
Da-Qing Shi ◽  
Shu-Jiang Tu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ammonium Acetate ◽  
Aromatic Aldehydes ◽  
Environmentally Benign ◽  
Reaction Conditions ◽  
One Pot ◽  
High Yields ◽  
Work Up ◽  
Ionic Liquid Medium

In this paper the preparation of 3,3,6,6-tetramethyl-9-aryl-1,2,3,4,5,6,7,8,9,10- decahydroacridin-1,8-dione derivatives from aromatic aldehydes, 5,5-dimethyl-1,3- cyclohexanedione and ammonium acetate in ionic liquids [bmim+][BF4-] is described. This new method has the advantages of easier work-up, milder reaction conditions, high yields and an environmentally benign procedure compared with other methods.

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