Preparation of trifluoroacetic acid-immobilized Fe3O4@SiO2–APTES nanocatalyst for synthesis of quinolines

Cu(ii) immobilized on Fe3O4@HNTs–tetrazole (CFHT) nanocomposite: synthesis, characterization, investigation of its catalytic role for the 1,3 dipolar cycloaddition reaction, and antibacterial activity

“…The next stage of weight loss in the temperature range 350 to 500 C is associated to the thermal decomposition of 3-cyanopropyl groups as an organic section. 26 The Fe 3 O 4 @HNTs-CPTS retains nearly 86% of its weight until 800 C. In the thermogram of the Fe 3 O 4 @HNTstetrazole (b), appearing weight loss in the temperature range of 50 to 250 C is attributed with the desorption and removal of solvents. The next weight loss is in the temperature range of 300 to 490 C, which might be related to the destruction of propyl groups.…”

Synthesis of α‐Aminonitriles and 5‐Substituted 1H‐Tetrazoles Using an Efficient Nanocatalyst of Fe3O4@SiO2–APTES‐supported Trifluoroacetic Acid

“…Preparation of Fe 3 O 4 @SiO 2 –APTES–TFA nanocatalyst [30]. [Color figure can be viewed at wileyonlinelibrary.com]…”

One‐Pot Multicomponent Synthesis of Pyrrolo[1,2‐a]pyrazines in Water Catalyzed by Fe3O4@SiO2‐OSO3H

“…Therefore, use of magnetic nanoparticles (MNPs) like Fe 3 O 4 nanocatalysts and magnetically coated nanoparticles which have advantages such as simple separation using an external magnet, low toxicity, highly active surface, ease of recovery and remarkable stability have been increased. Among different coatings, silica is an inexpensive, non‐toxic, high surface area and stability . Organic acids and acidic groups such as TFA and chlorosulfonic acid can be directly attached to the nanoparticles surface.…”