A polymer supported ascorbate functionalized task specific ionic liquid: an efficient reusable catalyst for 1,3-dipolar cycloaddition

Abstract

In situ coalescence of copper on polymer supported ascorbate functionalized task specific ionic liquid, acts as an efficient catalyst for Huisgen 1,3 dipolar cycloaddition.

Recent Advances in Recoverable Systems for the Copper-Catalyzed Azide-Alkyne Cycloaddition Reaction (CuAAC)

“…In an unusual approach, Patil et al immobilized the ascorbate reducing agent on a polystyrene resin decorated with N -methylimidazolium ionic fragments [126]. The material 16 was obtained (Scheme 8) by reacting a Merrifield resin with N -methylimidazole, exchanging hydroxide ions for the chloride ones and then treating the basic form of the material with ascorbic acid.…”

pH/temperature dependent selective removal of trace Cr(vi) from aqueous solution by imidazolium ionic liquid functionalized magnetic carbon nanotubes

“…Ionic liquids (ILs) are composed of organic cations and inorganic or organic anions, and they have a vanishingly small vapor pressure, making them an attractive alternative to volatile organic solvents. 20 Therefore, ILs have been used as greener solvents for organic synthesis, 21 material preparation, 22 catalysis, 23,24 separation and extraction. 25,26 It has been reported that anionic pollutants have strong affinity with some ILs, and can be extracted by ILs from aqueous solutions.…”

Recent Advances in Functionalized Mesoporous Silica Frameworks for Efficient Desulfurization of Fuels

“…However, necessity for large amounts of ILs and difficult catalyst recovery makes it challenging to apply them in wide range of organic reactions, except when these ILs can be heterogenized. Therefore, many attempts have been exerted towards fabrication of “supported ionic liquid catalysts” (SILCs) that can immobilize homogeneous ILs on appropriate host materials, which can range from silica-based materials and MOFs to carbon nanotubes [ 113 , 114 , 115 , 116 , 117 , 118 ]. Advantages associated with use of mesoporous silica have compelled researchers to use impregnation and grafting methods to prepare SILCs, but these efforts are accompanied by other issues, like reduction in surface area of supports, leaching of active components, or confinement in the degree of freedom of ILs [ 119 , 120 ].…”