Copper(II)-complex functionalized magnetite nanoparticles: a highly efficient heterogeneous nanocatalyst for the synthesis of 5-arylidenthiazolidine-2,4-diones and 5-arylidene-2-thioxothiazolidin-4-one

One‐pot multicomponent synthesis of novel 2‐(piperazin‐1‐yl) quinoxaline and benzimidazole derivatives, using a novel sulfamic acid functionalized Fe3O4 MNPs as highly effective nanocatalyst

“…In the first step, the Fe 3 O 4 MNPs were synthesized by the coprecipitation method. [ 11 ] Afterward, 2.15 mmol (0.5 g) of the prepared Fe 3 O 4 MNPs was well dispersed by ultrasonic vibration in 30 ml of methanol. Then PFBA at a concentration of 2.5 mmol/ml was added to the reaction mixture, which was stirred under reflux conditions overnight.…”

“…From this point of view, heterogenization of the homogeneous catalysts on appropriate supports rendered a great strategy for the design and preparation of superior heterogeneous organic-inorganic hybrid catalysts that not only exhibit better activity, stability, and selectivity but also permit facile catalyst recovery, which is one of the overarching principles of green chemistry. [10,11] Among the myriad of solid carriers, Fe 3 O 4 magnetic nanoparticles (MNPs) are attractive for the heterogenization of homogeneous catalysts because of their nano-size, nontoxic nature, easy preparation and functionalization procedures, and facile removal with the aid of a simple external magnet from the ultimate reaction mixture since their paramagnetic property. [12][13][14][15] The surface of bare MNPs may be improved to form a protective shell.…”

“…From this point of view, heterogenization of the homogeneous catalysts on appropriate supports rendered a great strategy for the design and preparation of superior heterogeneous organic–inorganic hybrid catalysts that not only exhibit better activity, stability, and selectivity but also permit facile catalyst recovery, which is one of the overarching principles of green chemistry. [ 10,11 ]…”

A convenient approach to synthesize substituted 5-Arylidene-3-m-tolyl thiazolidine-2, 4-diones by using morpholine as a catalyst and its theoretical study

“…Several methods have been reported up to date for the synthesis of thiazolidine-2,4-dione and its derivatives with an extensive range of catalysts including Alum [22], glycine, sodium carbonate, piperidinium acetate [23], piperidine [24], amines salts [25], baker's yeast [26], ionic liquids [27][28][29][30][31] and nanoparticle-supported copper (II) catalysts [32]. However, several of these existing methods suffer from one or more drawbacks, such as low yields, long reaction times, environmentally unfavorable solvents, and a requirement for excess catalyst.…”

Synthesis, characterization and study the biological evaluation of some Schiff base derivatives in the presence of lemon juice catalyst

“…Schiff bases can be synthesized from an aromatic or aliphatic amine and a carbonyl compound [10,11]. Schiff bases are known as organic chemicals due to significant biological activities such as antibacterial [12][13][14][15], antibiotics [16], antimicrobial [17], antitumor [18], anti-inflammatory agents [19], anticonvulsant activity [20], and anticancer [21]. Green chemistry includes design, development and utilization of processes and products to decrease or delete material that is dangerous for human and the environment.…”