An efficient and eco-compatible multicomponent synthesis of 2,4,5-trisubstituted imidazole derivatives using modified-silica-coated cobalt ferrite nanoparticles with tungstic acid

Abstract

The aim of this study is offering a method for the synthesis of 2,4,5-trisubstituted imidazole derivatives based on pursuing the green chemistry principles. Therefore, one-pot multicomponent cyclocondensation reaction through aldehyde...

Preparation and characterization of copper ferrite functionalized graphitic carbon nitride nanocomposite as an efficient and reusable catalyst for synthesis of spirooxindol quinazolinone derivatives

“…Our research team is currently engaged in the study of catalytic reactions as part of our ongoing research efforts [27][28][29][30] , this study investigated the fabrication and identi cation of CuFe 2 O 4 /g-C 3 N 4 nanocomposite in simple procedure. Moreover, the application of this nanocomposite was carried out as effective reusable catalyst for synthesis of spirooxindol quinazolinone derivatives under mild conditions.…”

Fabrication and characterization of inorganic–organic hybrid copper ferrite anchored on chitosan Schiff base as a reusable green catalyst for the synthesis of indeno[1,2-b]indolone derivatives

“…24 Also, these compounds have biological activities. 25 In continuation of our ongoing research works on catalytic reactions, [26][27][28][29][30][31] in this work, we chose to look into the straightforward and efficient synthesis of indeno [1,2-b]indolones utilizing a novel effective heterogeneous nanocatalyst. Initially, copper ferrite nanoparticles were prepared by the coprecipitation method; then, the magnetic nanoparticles of the CuFe 2 O 4 @CS-SB nanocomposite were prepared by chelating on the surface of chitosan and a Schiff base.…”

Polymer-Supported Oxidovanadium(IV) Complexes and Their Catalytic Applications in One-Pot Multicomponent Reactions Producing Biologically Active 2,4,5-Trisubstituted-1H-imidazoles

“…These catalysts have been used for one-pot multicomponent reactions (MCRs) (reagents: benzil, ammonium acetate and various aromatic aldehydes) for the synthesis of 2,4,5-trisubstituted imidazole molecules in a non- Nowadays, instead of using conventional catalysts such as Lewis or Brønsted acid and bases [48][49][50][51], the new generation of catalysts such as supported catalysts [52], polymerbased catalysts [53], metal-organic frameworks [54] and enzymes [55] have been used for various organic and inorganic transformations. In the literature, many synthetic methods have been reported for one-pot-multicomponent reactions of benzil, ammonium acetate and different aromatic aldehyde to synthesize 2,4,5-trisubstituted imidazoles under different reaction conditions [56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72]. In general, most procedures in the literature have their own advantages, but there are still some drawbacks in the literature procedures such as the use of non-reusable catalysts, long reaction times, hazardous solvents, harsh reaction conditions, high temperatures, the requirement of a large amount of catalyst and low yield of products.…”