Imidazolium chloride immobilized on copper acetylacetonate-grafted magnetic chitosan as a new metal/ionic liquid bifunctional catalyst for selective oxidation of benzyl alcohols in water

Abstract

Copper acetylacetonate and 1-methyl-3-propyl imidazolium chloride immobilized on chitosan magnetic nanoparticlesviacovalent attachment as dual metal–ionic liquid catalyst for selective oxidation of benzyl alcohols under mild and co-catalyst free conditions.

Thermo‐sensitive ionic hydrogels synthesis via post quaternization cross‐linking: A highly efficient reusable catalytic thermo‐responsive nanoreactors

“…Nitroarenes are usually potent toxic or carcinogenic substances, which has resulted in a range of issues including the risk to human health as well as the contamination of soil and water resources. [ 67 ] The catalytic reduction is a clean and convenient method to convert nitroarenes into less toxic compounds, thereby removing the poisonous substances and simultaneously synthesizing high‐value chemicals such as aromatic amines, which are widely used as intermediates for the synthesis of pesticides, explosives, organic pigments, pharmaceuticals, and polymers. [ 68 ] Therefore, p (NIPAm‐ co ‐VIm)‐Ag composite hydrogels, which were expected to have high catalytic selectivity and enhanced mass transfer for the catalytic reduction of hydrophilic 4‐NP to 4‐AP and of hydrophobic nitrobenzene (NB) to aniline (AB) by NaBH 4 , were used.…”

Synthesis, characterization, and application of CoFe2O4@amino‐2‐naphthol‐4‐sulfonic acid as a novel and reusable catalyst for the synthesis of spirochromene derivatives

“…[5][6][7] Also, MNPs are a bridge between homogeneous and heterogeneous catalysis for their surface functionalization. [8][9][10] Furthermore, the utilization of MNPs in catalysis systems was increased. Superior characteristics of MNPs such as high magnetic properties lead to its easy collection from the reaction mixture, high surface area to volume ratio, and most importantly, ecofriendly and nontoxic procedure.…”

Fe3O4@vitamin B1 as a sustainable superparamagnetic heterogeneous nanocatalyst promoting green synthesis of trisubstituted 1,3‐thiazole derivatives

“…[9] Surface functionalization of magnetic nanoparticles (MNPs) is a well-designed way to bridge the gap between heterogeneous and homogeneous catalysis. [10][11][12] Organocatalysts contain a homogeneous part whereby starting materials are easily converted to the desired products(s), and the heterogeneous part of these advanced catalysts can be separated easily using an external magnet. [13][14][15] Thus, high conversions in reaction and easy work-up procedures allow the preparation of desired compounds in high pure isolated yields.…”

“…The homogeneous part can be successfully decorated with linkers/ligands on the surface of magnetite, or alternatively the organocatalysts can be directly immobilized on the surface of magnetite . Surface functionalization of magnetic nanoparticles (MNPs) is a well‐designed way to bridge the gap between heterogeneous and homogeneous catalysis . Organocatalysts contain a homogeneous part whereby starting materials are easily converted to the desired products(s), and the heterogeneous part of these advanced catalysts can be separated easily using an external magnet .…”