Four-component green synthesis of benzochromene derivatives using nano-KF/clinoptilolite as basic catalyst: study of antioxidant activity

2D ZnO/Fe3O4 nanocomposites as a novel catalyst‐promoted green synthesis of novel quinazoline phosphonate derivatives

“…Continuing previous research, in this work we synthesized a series of novel phosphonates using the reaction of 2,4‐dihydroxyacetophenone, 1 , isopropenylacetylene, 2 , 2‐amino‐ N ‐alkyl benzamide, 3 , dialkyl acetylenedicarboxylates, 4 , and trimethyl phosphite or triphenyl phosphite, 5 , in the presence of reusable ZnO/Fe 3 O 4 nanocomposites in water at room temperature with very good yields (Scheme ) …”

“…According to my previous work, to give excellent yield of compound 6 , we optimized the reaction conditions (Table ). Initially, for determination of the best conditions for generation of phosphonate, 6 , the reaction of 2,4‐dihydroxyacetophenone, 1 , isopropenylacetylene, 2 , 2‐amino‐ N ‐methyl benzamid, 3a , dimethyl acetylenedicarboxylates, 4a , and trimethyl phosphite, 5a , was selected as a model reaction.…”

“…Herein, in continuation of my research and our studies for discovering new procedures for synthesis of important organic compounds, in this research a series of novel phosphonate derivatives containing quinazolinone were synthesized using an efficient one‐pot, five component reaction between 2,4‐dihydroxyacetophenone, 1 , isopropenylacetylene, 2 , 2‐amino‐ N ‐alkyl benzamide, 3 , dialkyl acetylenedicarboxylates, 4 , and trimethyl phosphite or triphenyl phosphite, 5 , in the presence of reusable 2D ZnO/Fe 3 O 4 nanocomposites in water at room temperature with very good yields (Scheme ). Furthermore, the antioxidant activities of the same synthesized derivatives, such as 6a , 6b , 6e and 6f , were investigated by DPPH (2, 2‐diphenyl‐1‐picrylhydrazyl) radical trapping and ferric ion decreasing power experiments.…”

Fe3O4/ZnO/MWCNTs magnetic nanocomposites promoted synthesis of new chromeno pyrano [2,3‐d]thiazins: Investigation of antioxidant and antibacterial activities

“…For this reason, finding out suitable and new methods to combat these pathogens is significant and recent investigation has focused on the evaluation of the synthesized compounds antibacterial effects. Herein, in continuing research of my study for finding out new process for generation of valuable organic compounds, [31][32][33][34][35][36][37][38][39][40][41][42][43] herein, we considered a green process for the generation of some chromeno pyrano [2,3-d]thiazins derivatives 6 via a good and five component reactions of -hydroxyacetophenone or its derivatives 1, dimethyl carbonate 2, aldehyde 3, malononitrile or ethyl 2-cyanoacetate 4, and isothiocyanates 5 in the presence of Fe 3 O 4 /ZnO/ MWCNTs MNCs in IL at room temperature with excellent yields (Scheme 1).…”

ZnO/Ag/Fe3O4 nanoparticles supported on carbon nanotubes employing Petasites hybridus rhizome water extract: A novel organometallic nanocatalyst for the synthesis of new naphthyridines

“…For this reason, discovering suitable and new methods to reduce these pathogens is significant, and recent investigation has focused on the evaluation of antibacterial effects on the synthesized compounds. Herein, in continuing research of my study for finding out new process for generation of valuable organic compounds, [42][43][44][45][46][47][48][49][50][51][52] herein, we considered a green process for the generation of some naphthyridine derivatives 7 via a multicomponent reactions of phthalaldehyde 1, 2-aminoacetonitrile 2, activated acetylenic compounds 3, alkyl bromides 4, triphenylphosphine 5 and ammonium acetate 6 in the presence of a catalytic amount of ZnO/Ag/Fe 3 O 4 /CNTs NPs in water at room temperature with excellent yields (Scheme 1).…”