Application of Organic Solvent Nanofiltration to Separation of Ionic Liquids and Products from Ionic Liquid Mediated Reactions

2005 ◽  
Vol 83 (3) ◽  
pp. 309-316 ◽  
Author(s):  
S. Han ◽  
H.-T. Wong ◽  
A.G. Livingston
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvent ◽  
Organic Solvent Nanofiltration

scholarly journals Grubbs–Hoveyda type catalysts bearing a dicationic N-heterocyclic carbene for biphasic olefin metathesis reactions in ionic liquids

2015 ◽  
Vol 11 ◽  
pp. 1632-1638 ◽  
Author(s):  
Maximilian Koy ◽  
Hagen J Altmann ◽  
Benjamin Autenrieth ◽  
Wolfgang Frey ◽  
Michael R Buchmeiser
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvent ◽  
Single Crystal ◽  
Ring Opening ◽  
The Novel ◽  
Metathesis Polymerization ◽  
X Ray ◽  
Metathesis Catalyst ◽  
Nonpolar Organic

The novel dicationic metathesis catalyst [(RuCl2(H2ITapMe2)(=CH–2-(2-PrO)-C6H4))2+ (OTf−)2] (Ru-2, H2ITapMe2 = 1,3-bis(2’,6’-dimethyl-4’-trimethylammoniumphenyl)-4,5-dihydroimidazol-2-ylidene, OTf− = CF3SO3 −) based on a dicationic N-heterocyclic carbene (NHC) ligand was prepared. The reactivity was tested in ring opening metathesis polymerization (ROMP) under biphasic conditions using a nonpolar organic solvent (toluene) and the ionic liquid (IL) 1-butyl-2,3-dimethylimidazolium tetrafluoroborate [BDMIM+][BF4 −]. The structure of Ru-2 was confirmed by single crystal X-ray analysis.

Organic Solvent Nanofiltration in Asymmetric Hydrogenation: Enhancement of Enantioselectivity and Catalyst Stability by Ionic Liquids.

ChemInform ◽  
2006 ◽  
Vol 37 (37) ◽  
Author(s):  
Hau-To Wong ◽  
Yoong Hsiang See-Toh ◽  
Frederico Castelo Ferreira ◽  
Robert Crook ◽  
Andrew G. Livingston
Keyword(s):  
Ionic Liquids ◽  
Organic Solvent ◽  
Asymmetric Hydrogenation ◽  
Catalyst Stability ◽  
Organic Solvent Nanofiltration

Organic solvent nanofiltration in asymmetric hydrogenation: enhancement of enantioselectivity and catalyst stability by ionic liquids

2006 ◽  
pp. 2063 ◽  
Author(s):  
Hau-To Wong ◽  
Yoong Hsiang See-Toh ◽  
Frederico Castelo Ferreira ◽  
Robert Crook ◽  
Andrew G. Livingston
Keyword(s):  
Ionic Liquids ◽  
Organic Solvent ◽  
Asymmetric Hydrogenation ◽  
Catalyst Stability ◽  
Organic Solvent Nanofiltration

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.

Recovery and reuse of ionic liquids and palladium catalyst for Suzuki reactions using organic solvent nanofiltration

2006 ◽  
Vol 8 (4) ◽  
pp. 373 ◽  
Author(s):  
Hau-to Wong ◽  
Christopher John Pink ◽  
Frederico Castelo Ferreira ◽  
Andrew Guy Livingston
Keyword(s):  
Ionic Liquids ◽  
Organic Solvent ◽  
Palladium Catalyst ◽  
Suzuki Reactions ◽  
Organic Solvent Nanofiltration ◽  
Recovery And Reuse

Efficient regio- and stereo-selective cleavage of aziridines and epoxides using an ionic liquid as reagent and reaction medium

2007 ◽  
Vol 85 (5) ◽  
pp. 366-371 ◽  
Author(s):  
Brindaban C Ranu ◽  
Laksmikanta Adak ◽  
Subhash Banerjee
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Organic Solvent ◽  
Reaction Medium ◽  
Synthetic Route ◽  
High Yields

Ionic liquids, containing a variety of functionalities such as halo, azido, and thiocyano, efficiently cleave aziridines and epoxides to the corresponding products in high yields. The cleavages are regio- and stereo-selective. The reactions are complete in 1 h at 60 °C and do not require any other catalyst or organic solvent. Thus, a convenient synthetic route to 1,2-haloamines, 1,2-azidoamines, 1,2-thiocyanoamines, 1,2-azidoalcohols, and 1,2-thiocyanoalcohols is developed.Key words: aziridine, epoxide, ionic liquid, cleavage, regioselectivity, stereoselectivity

Mapping the “Extra Solvent Power, ESP” of Ionic Liquids for Monomers, Polymers and Globular Nanoparticles

2017 ◽  
Author(s):  
Jose A. Pomposo
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Linear Polymers ◽  
Green Solvents ◽  
Ionic Polymers ◽  
First Time ◽  
Solvent Power

Understanding the miscibility behavior of ionic liquid (IL) / monomer, IL / polymer and IL / nanoparticle mixtures is critical for the use of ILs as green solvents in polymerization processes, and to rationalize recent observations concerning the superior solubility of some proteins in ILs when compared to standard solvents. In this work, the most relevant results obtained in terms of a three-component Flory-Huggins theory concerning the “Extra Solvent Power, ESP” of ILs when compared to traditional non-ionic solvents for monomeric solutes (case I), linear polymers (case II) and globular nanoparticles (case III) are presented. Moreover, useful ESP maps are drawn for the first time for IL mixtures corresponding to case I, II and III. Finally, a potential pathway to improve the miscibility of non-ionic polymers in ILs is also proposed.

Dynamics of Ion Locking in Doubly Polymerized Ionic Liquids

2020 ◽  
Author(s):  
Swati Arora ◽  
Julisa Rozon ◽  
Jennifer Laaser
Keyword(s):  
Dielectric Constant ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ion Pairs ◽  
Polymer Chains ◽  
Ion Motion ◽  
Charged Species ◽  
Broadband Dielectric Spectroscopy ◽  
Covalently Linked ◽  
Insight Into

<div>In this work, we investigate the dynamics of ion motion in “doubly-polymerized” ionic liquids (DPILs) in which both charged species of an ionic liquid are covalently linked to the same polymer chains. Broadband dielectric spectroscopy is used to characterize these materials over a broad frequency and temperature range, and their behavior is compared to that of conventional “singly-polymerized” ionic liquids (SPILs) in which only one of the charged species is attached to the polymer chains. Polymerization of the DPIL decreases the bulk ionic conductivity by four orders of magnitude relative to both SPILs. The timescales for local ionic rearrangement are similarly found to be approximately four orders of magnitude slower in the DPILs than in the SPILs, and the DPILs also have a lower static dielectric constant. These results suggest that copolymerization of the ionic monomers affects ion motion on both the bulk and the local scales, with ion pairs serving to form strong physical crosslinks between the polymer chains. This study provides quantitative insight into the energetics and timescales of ion motion that drive the phenomenon of “ion locking” currently under investigation for new classes of organic electronics.</div>

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