Fe₃O₄ magnetic nanoparticles (MNPs) as an efficient catalyst for selective oxidation of benzylic and allylic C–H bonds to carbonyl compounds with tert-butyl hydroperoxide

Abstract

The oxidation reactions are effectively and economically performed under mild conditions.

Fe3O4@Boehmite-NH2-CoII NPs: An Environment Friendly Nanocatalyst for Solvent Free Synthesis of Coumarin Derivatives Through Pechmann Condensation Reaction

“…Notably, one of the interesting features of this technique is that it provides easy separation of catalysts from the reaction mixture by means of an external magnetic field as well as the prevention of MNP agglomeration. From our laboratory, use of Fe 3 O 4 @Boehmite-NH 2 -Co II NPs (Scheme 1) as magnetic nano structured catalyst has been explored for the Suzuki-Miyaura and Heck-Mizoroki cross-coupling reactions in a green solvent (H 2 O) and also selective oxidation of alcohols using household bleach [46][47][48][49][50][51][52][53][54][55][56][57][58]. In view of the great importance of coumarins (their biological and pharmacological activities) as well as the mentioned drawbacks of some previous reported methods, the search for the new readily available and green catalysts is still being actively pursued.…”

MnO2@Fe3O4 Magnetic Nanoparticles as Efficient and Recyclable Heterogeneous Catalyst for Benzylic sp3 C−H Oxidation

“…The Fe 3 O 4 MNPs, due to their unique physicochemical properties becoming increasingly significant in the field of catalysis, imaging, photonics, nanoelectronics, sensors, biomaterials, and biomedicine . In literature, these Fe 3 O 4 nanoparticles are used for the selective oxidation of benzylic and allylic C−H bonds to carbonyl compounds using TBHP as an oxidant . Manganese‐based catalyst has attracted considerable research interest because of its nanostructures have a large surface area and high catalytic activity as well as it is cheap, mild and nontoxic oxidative reagent used for the selective oxidation of various functional groups .…”

“…[23] In literature, these Fe 3 O 4 nanoparticles are used fort he selective oxidation of benzylic and allylic CÀHb onds to carbonyl compounds using TBHP as an oxidant. [24] Manganese-based catalyst has attracted considerable research interest because of its nanostructures have al arge surface area and high catalytic activity as well as it is cheap, mild and nontoxic oxidative reagentu sed for the selective oxidation of various functional groups. [25] Thus, developing Mn supported on Fe 3 O 4 MNPs for benzylic sp 3 CÀHo xidation of ether and methylene compounds are highly attractive and desirable approach in terms of the green chemistry points of view; which will also allow finding am ore economical and environmentally benign procedure.…”

Engineering a Cu‐MOF Nano‐Catalyst by using Post‐Synthetic Modification for the Preparation of 5‐Substituted 1H‐Tetrazoles

“…On the other hand, tetrazoles are important class of nitrogen containing heterocycles, which is an important blocks in the wide range of fields such as coordination chemistry, agriculture, medicinal chemistry, materials science, photography, and information recording systems . For the preparation of 5‐substituted 1 H ‐tetrazoles via [3 + 2] cycloaddition reaction of nitriles and sodium azide several procedures with different catalyst systems have been introduced . Among them, copper‐catalytic systems have received considerable attention due to its low cost, easy availability and handling, low toxicity, and high efficiency .…”