A novel Schiff base of Mn(III) complex supported on magnetic cobalt nanoparticles as a highly efficient retrievable heterogeneous catalyst in oxidation of alcohols and sulfides compounds

Schiff base Mn(iii) and Co(ii) complexes coated on Co nanoparticles: an efficient and recyclable magnetic nanocatalyst for H2O2 oxidation of sulfides to sulfoxides

“…Schiff base transition metal complexes as catalysts have been widely used because of their potential use in numerous reactions, 6,7 such as hydrogenation of organic substrates, 8 epoxidation of olefins, 9 conversion of epoxides into halohydrines, 10,11 asymmetric ring opening of terminal epoxides 12 and oxidation reactions. 13–15 In recent years some publications have been reported sulfides-oxidation using phthalazine-based di-iron complexes, 16 β-brominated meso -tetraphenylporphyrinato manganese( iii ) acetate, 17 copper Schiff base complex, 18 immobilized metalloporphyrins, 19 TsOH by phenyliodine diacetate as an oxidant, 20 dendritic bis(acylamino) pyridines, 21 Schiff base of Mn( iii ) complex supported on magnetic cobalt nanoparticles, 22 Schiff base complexes of Ni, Co, Cr, Cd and Zn supported on Fe 3 O 4 magnetic nanoparticles, 23 magnetic nanoparticle immobilized N -propylsulfamic acid, 24 Au/CTN–silica catalyst, 25 cobalt( ii ), copper( ii ), zinc( ii ) and palladium( ii ) Schiff base complexes, 26 1,4-bis(3-methylimidazolium-1-yl) butane ditribromide, 27 carboxylated multi-walled carbon nano tubes, 28 1,4-bis(3-methylimidazolium-1-yl) butane ditribromide [bMImB](Br 3 ) 2 ionic liquid reagent 29 and Mo( vi ) complex supported on Fe 3 O 4 nanoparticles. 30 In this study, new heterogeneous nanocatalysts were synthesized by chemical modification of surface magnetic nanoparticles of Co with Schiff-base ligands, followed by complex formation through the reaction with Co( ii ) and Mn( iii ) salts.…”

Schiff base complexes and their versatile applications as catalysts in oxidation of organic compounds: part I

“…Moreover, the synthesized catalyst showed a high catalytic activity in the oxidation of alcohols and sulfides to the corresponding aldehydes and sulfoxides (Scheme ). The oxidation reaction was carried in the absence of the catalyst and it was found that the reaction yield was only 4%, which confirms the importance of the catalyst for reaction completion (Table ) …”

γ‐Fe2O3@HAp@PBABMD@Cu magnetic nanoparticles: Efficient, green, and recyclable novel nanocatalyst for the synthesis of densely functionalized pyrrole‐pyrido[2,3‐d]pyrimidine hybrids

“…HAp has the mesoporous solid support with the unique advantages such as catalyst support, weak acid–base properties, high adsorption capacity, and ion exchangeability 7,13–19 . On the other hand, it has been evidenced that the immobilization of homogeneous Schiff base metal complexes onto/in solid supports is one of the most efficient procedures for preparation of heterogeneous metal‐imine complexes 20 . More recently, the complexes of various Schiff bases with transition metal ions have been extensively investigated 21 due to their significant importance in the chelating ability, biological, and catalytic applications 22 .…”