Hydrogen-Bonding Interactions and Protic Equilibria in Room-Temperature Ionic Liquids Containing Crown Ethers

2011 ◽  
Vol 115 (14) ◽  
pp. 3912-3918 ◽  
Author(s):  
Timothy W. Marin ◽  
Ilya A. Shkrob ◽  
Mark L. Dietz
Keyword(s):  
Hydrogen Bonding ◽  
Ionic Liquids ◽  
Crown Ethers ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Hydrogen Bonding Interactions

scholarly journals Evaluation of solid-supported room-temperature ionic liquids containing crown ethers as media for metal ion separation and preconcentration

Talanta ◽  
2015 ◽  
Vol 135 ◽  
pp. 115-123 ◽  
Author(s):  
Cory A. Hawkins ◽  
M.A. Momen ◽  
Sarah L. Garvey ◽  
John Kestell ◽  
Michael D. Kaminski ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Crown Ethers ◽  
Metal Ion ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Ion Separation ◽  
Separation And Preconcentration

scholarly journals The role of hydrogen bonding in controlling the selectivity of Diels–Alder reactions in room-temperature ionic liquids

2002 ◽  
Vol 4 (5) ◽  
pp. 517-520 ◽  
Author(s):  
Ajay Aggarwal ◽  
N. Llewellyn Lancaster ◽  
Alick R. Sethi ◽  
Tom Welton
Keyword(s):  
Hydrogen Bonding ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Diels Alder ◽  
Room Temperature Ionic Liquids

scholarly journals Room Temperature Ionic Liquids in Asymmetric Hetero-Ene Type Reactions: Improving Organocatalyst Performance at Lower Temperatures

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 355
Author(s):  
Fabricio R. Bisogno ◽  
Rosario Fernández ◽  
Jose María Lassaletta ◽  
Gonzalo de de Gonzalo
Keyword(s):  
Hydrogen Bonding ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Catalyst Activity ◽  
Room Temperature Ionic Liquids ◽  
Tertiary Alcohols ◽  
Tert Butyl ◽  
Keto Esters ◽  
Enantioselective Addition ◽  
Positive Effect

Room temperature ionic liquids (RTILs) have been widely used as (co)solvents in several catalytic processes modifying, in most of the cases, the catalyst activity and/or the selectivity for the studied reactions. However, there are just a few examples of their use in hydrogen bonding organocatalysis. In this paper, we show the positive effect of a set of imidazole-based ionic liquids ([bmim]BF4 and [hmim]PF6) in the enantioselective addition of formaldehyde tert-butylhydrazone to prochiral α-keto esters catalyzed by a sugar-based chiral thiourea. Reactions performed in the presence of low percentages of RTILs led to an increase of the catalyst activity, thereby making possible to work at lower temperatures. Thus, the chiral tert-butyl azomethyl tertiary alcohols could be obtained with moderate to good conversions and higher enantioselectivities for most of the studied substrates when using up to 30 vol% of [hmim]PF6 as a cosolvent in processes performed in toluene.

Solvent Extraction of Sr2+and Cs+Based on Room-Temperature Ionic Liquids Containing Monoaza-Substituted Crown Ethers

2004 ◽  
Vol 76 (10) ◽  
pp. 2773-2779 ◽  
Author(s):  
Huimin Luo ◽  
Sheng Dai ◽  
Peter V. Bonnesen
Keyword(s):  
Ionic Liquids ◽  
Solvent Extraction ◽  
Crown Ethers ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids

Chemical Dynamics in Room-Temperature Ionic Liquids: The Role of Hydrogen Bonding

2010 ◽  
pp. 331-340
Author(s):  
Souravi Sarkar ◽  
Rajib Pramanik ◽  
Nilmoni Sarkar
Keyword(s):  
Hydrogen Bonding ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Chemical Dynamics

Extraction of radiostrontium from nuclear waste solution using crown ethers in room temperature ionic liquids

2012 ◽  
Vol 24 (11) ◽  
pp. 771-778 ◽  
Author(s):  
Arijit Sengupta ◽  
Prasanta Kumar Mohapatra
Keyword(s):  
Ionic Liquids ◽  
Crown Ethers ◽  
Nuclear Waste ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids ◽  
Waste Solution

Solute–solvent hydrogen-bonding in room temperature ionic liquids studied by Raman spectroscopy

2012 ◽  
Vol 14 (39) ◽  
pp. 13676 ◽  
Author(s):  
Akira Kobayashi ◽  
Koji Osawa ◽  
Masahide Terazima ◽  
Yoshifumi Kimura
Keyword(s):  
Raman Spectroscopy ◽  
Hydrogen Bonding ◽  
Ionic Liquids ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids

Traditional Extractants in Nontraditional Solvents:  Groups 1 and 2 Extraction by Crown Ethers in Room-Temperature Ionic Liquids†

2000 ◽  
Vol 39 (10) ◽  
pp. 3596-3604 ◽  
Author(s):  
Ann E. Visser ◽  
Richard P. Swatloski ◽  
W. Matthew Reichert ◽  
Scott T. Griffin ◽  
Robin D. Rogers
Keyword(s):  
Ionic Liquids ◽  
Crown Ethers ◽  
Room Temperature ◽  
Room Temperature Ionic Liquids
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