Selective, Efficient and Gram‐Scale Oxidation of Alcohols Using Household Bleach in the Presence of Fe₃O₄@Boehmite‐NH₂‐Co^II Nanoparticles

Abstract

A new magnetic nanostructured core–shell‐like Fe3O4@Boehmite‐NH2‐CoII NPs as an environmentally friendly heterogeneous catalyst reported earlier by our group, has been found to be very effective for the oxidation of alcohols in aqueous media using household bleach at room temperature. The method has been applied for the oxidation of a range of primary and secondary benzylic, allylic and aliphatic alcohols with variable functionalities in excellent yields and selectivity. An aqueous medium, magnetic separation by an external magnetic field, low catalyst loading and catalyst reusability up to six runs without significant decrease in catalytic activity made the present procedure sustainable, economically viable and better than the most previously reported protocols.

Synthesis of 5‐substituted 1H‐tetrazoles and oxidation of sulfides by using boehmite nanoparticles/nickel‐curcumin as a robust and extremely efficient green nanocatalyst

“…[ 24,29 ] Because of its low cost, affordable, and stable boehmite, it has been considered as appropriate support, and researchers have used it in their research works. [ 5,30–36 ] Boehmite (γ‐AlOOH) is a metastable phase of alumina that has free AlOH in the surface of nanoparticles. [ 37,38 ] For loading metal ions, these free AlOH groups on the surface of solid support can be used for ligand connection.…”

CuII Anchored onto the Magnetic Talc: A New Magnetic Nanostructured Catalyst for the One‐Pot Gram‐Scale Synthesis of 1H‐Pyrazolo[1,2‐b]phthalazine‐5,10‐dione Derivatives

“…In continuation of our studies on the synthesis and application of magnetic nanostructured catalysts and to develop a new synthetic methodology for the preparation of 1 H ‐pyrazolo[1,2‐b]phthalazine‐5,10‐diones via one‐pot multicomponent reactions (MCRs), Cu II anchored onto the magnetic talc (γ‐Fe 2 O 3 / talc/Cu II NPs) as a magnetically heterogeneous nanocatalyst from commercially available chemicals in multiple steps was prepared. (Scheme ) The method consists of the reaction between a mixed salt‐solution of ferrous and ferric ions and NaOH in the presence of talc powder ( I ) as promising supporting material for catalysts in organic reactions.…”

Triple‐Shell Hollow CuNiFe2O4 Spheres as Heterogeneous Catalyst for Selective Oxidation of Alcohols

“…The production of corresponding carbonyl compounds in oxidation reaction are useful starting materials in chemical synthesis because of their ability to easily react with nucleophiles . Various methods have been designed to oxidation of alcohols using different inorganic oxidants such as ammonium permanganate, pyridinium chlorochromate (PCC), chromium trioxide, pyridinium dichromate (PDC), tert‐butyl hydroperoxide, KMnO 4 , ClO 2 , H 5 IO 6 and NaClO . However, some of these oxidants are toxic, expensive, hazardous, and corrosive.…”

“…[2] Various methods have been designed to oxidation of alcohols using different inorganic oxidants such as ammonium permanganate, [3] pyridinium chlorochromate (PCC), [4] chromium trioxide, [5] pyridinium dichromate (PDC), [6] tert-butyl hydroperoxide, [7] KMnO 4 , [8] ClO 2 , [9] H 5 IO 6 [10] and NaClO. [11] However, some of these oxidants are toxic, expensive, hazardous, and corrosive. Among the oxidants, molecular O 2 and aqueous H 2 O 2 have attracted more and more attention owing to economic and environmental concerns.…”