S(RN)1-type coupling adducts are readily prepared by the reaction between a-sulfonylesters or a-cyanosulfones and gem-dinitro compounds in ionic liquids. The reactions progress smoothly and recovered ionic liquids can be used for several iterations, as long as they are washed with water to remove alkali metallic salts. The reaction rate is slower than the corresponding S(RN)1 reaction in DMSO, ...

A solvent- and halogen-free synthesis of high purity triflate ionic liquids via direct alkylation of organic bases (amines, phosphines or heterocyclic compounds) with methyl and ethyl trifluoromethanesulfonate (methyl and ethyl triflate) has been developed. Cheap and non-toxic dimethyl and diethyl carbonate serve as source for the methyl and ethyl groups in the preparation of methyl and ethyl t...

D-Xylose-based ionic liquids have been prepared from D-xylose following a five steps reaction sequence, the key step being a click cycloaddition. These ionic liquids (ILs) have been characterized through classical analytical methods (IR, NMR, mass spectroscopy, elemental analysis) and their stability constants, Tg and Tdec, were also determined. Considering their properties and their hydrophili...

The front cover displays novel ionic liquid crystalline (ILC) compounds containing a nitroxide radical unit in the organic cations, showing an enantiotropic smectic A (SmA) phase. One of ILC shows strong intermolecular magnetic interactions owing to nanosegregation strongly bonded and non-ionic moieties. Its droplet can be magnetically manipulable. More information found Full Paper by Yoshiaki ...

The features of charge transfer in electrochemical cells with electrodes various types and an intercalated compound Ag x HfSe 2 (x=0.1,0.2) as electrolyte were studied by the method impedance spectroscopy. Based on analysis obtained data, presence mixed electron-ionic conductivity this was shown, numbers ionic electron these compounds determined for first time. different nature relaxation proce...

BACKGROUND The plant cuticle is an extracellular lipophilic biopolymer covering leaf and fruit surfaces. Its main function is the protection of land-living plants from uncontrolled water loss. In the past, the permeability of the cuticle to water and to non-ionic lipophilic molecules (pesticides, herbicides and other xenobiotics) was studied intensively, whereas cuticular penetration of polar i...

The use of ionic liquids (ILs) for gas separation processes recently has attracted much attention due to high solubilities of different gaseous species in ionic liquids [1]. The preparation of supported ionic liquid membranes (SILMs) is also reported for selective separation of different organic or gaseous compounds. Research activities have amongst others focused on CO2 separation from gas str...

This study investigates the effects of two surfactants (one anionic and one non-ionic) and controlled modifications in temperature (298-323K) on the permeation of two structurally similar compounds through a silicone membrane using a Franz diffusion cell system. In all cases the presence of an anionic surfactant, namely sodium dodecyl sulphate (SDS), reduced the permeation of both compounds (me...

The fields of metabolomics and metabonomics attempt to phenotype and quantify the vast array of metabolites present in biological samples. Reversed-phase liquid chromatography (LC) coupled with mass spectrometry (MS) is a valuable tool in the separation and identification of these compounds. Reversed-phase HPLC techniques cover a wide range of compounds. However, ionic and polar compounds such ...