[Bmim]PF(6): a novel and recyclable ionic liquid for conversion of oxiranes to thiiranes in aqueous media

Crystal structure of 1,1′-(butane-1,4-diyl)bis(3-propyl-1H-imidazol-3-ium) bis(hexafluoridophosphate), C32H56F24N8P4

C32H56F24N8P4, triclinic, P 1 ‾ $P‾{1}$ (no. 2), a = 8.6769(13) Å, b = 9.8858(14) Å, c = 14.510(2) Å, α = 102.564(2)°, β = 94.461(3)°, γ = 92.152(3)°, V = 81.710(2) Å3, Z = 1, R gt (F) = 0.0692, wR ref (F 2) = 0.2245, T = 296(2) K.

Crystal structure of 3,3′-(1,2-phenylenebis(methylene))bis(1-methyl-1H-imidazol-3-ium) bis(hexafluoridophosphate), C16H20F12N4P2

C16H20F12N4P2, monoclinic, P21/c (no. 14), a = 7.3086(15) Å, b = 12.174(3) Å, c = 26.355(6) Å, β = 94.500(2)°, V = 2337.6(8) Å3, Z = 4, R gt(F) = 0.0742, wR ref(F 2) = 0.2262, T = 296(2) K.

Facile synthesis of ZnAl2O4nanoparticles: efficient and reusable porous nano ZnAl2O4and copper supported on ZnAl2O4catalysts for one pot green synthesis of propargylamines and imidazo[1,2-a]pyridines by A3coupling reactions

A simple, facile and efficient route was developed for the synthesis of nano ZnAl₂O₄using ethanolamine.

Ionic liquid/water mixture promoted organic transformations

Wet ILs constitutes a new class of solvents with their own new and interesting properties. The IL–water mixing makes it easy to control the properties of the solution and the formation of these ionic liquid mixtures increases synthetic flexibility.

Interfacial organic synthesis in a simple droplet-based microfluidic system

A spherical liquid-liquid interface can be obtained by dispersing one liquid phase into another to form droplets, which will facilitate the two-phase reactions between the immiscible participating fluids. The phase transfer catalysts assembled at the droplet "wall" catalyze the reactions between the aqueous and organic phases. The study illustrates an interfacial synthetic approach which is ideal for the biphasic reaction by taking advantage of the droplet-based microdevice. The improved reaction efficiency can be attributed to the high surface-to-volume ratio and internal flow circulation in the droplets.

Ionic Liquids Derivative of 1H-Imidazole as Novel Reagents, Catalysts and Solvents

Ionic liquids are becoming widely used in chemical processes. Taking this into account we focus on recent advances in the synthesis and the investigation of 1H-imidazole derived ionic liquids. The fi rst part of this paper focuses on describing the developments in the synthesis and physical properties of 1,3-disubstituted imidazolium salts. The second part describes the application of these unique reagents, as catalysts and solvents in organic chemistry.

Ionic liquid promoted Diels-Alder Reaction between anthrone and maleimides

Ionic liquids (IL) are gaining importance as green solvents. Imidazolium ionic liquid [bmim]+[Cl]−, an environmentally benign solvent, was found to promote the Diels-Alder reaction between anthrone and maleimides at room temperature with excellent yields. The ionic liquid played a dual role as solvent and catalyst.

Ionic-Liquid-Promoted Palladium-Catalyzed Multicomponent Cyclocarbonylation ofo-Iodoanilines and Allenes To Form Methylene-2,3-dihydro-1H-quinolin-4-ones

The palladium-catalyzed cyclocarbonylation reaction of o-iodoanilines with allenes and CO in 1-butyl-3-methylimidazolium hexafluorophosphate afforded 3-methylene-2,3-dihydro-1H-quinolin-4-ones in moderate to excellent yields under a low pressure (5 atm) of CO. The ionic liquid, as the solvent and promoter, enhances the efficiency of the cyclocarbonylation reaction. The recyclability of the system of ionic liquid/catalyst/ligand was also demonstrated.

Study of the Michael addition of β-cyclodextrin–thiol complexes to conjugated alkenes in water

An environmentally benign and highly efficient supramolecular Michael addition of thiols from the secondary side of beta-cyclodextrin to alpha,beta-unsaturated compounds at the primary side in water is described in quantitative yields; products of undesirable side reactions resulting from polymerization are not observed; the use of cyclodextrin precludes the use of either acid or base and the catalyst can be recovered and reused.