Synthesis and characterization of a new Schiff-base complex of copper on magnetic MCM-41 nanoparticles as efficient and reusable nanocatalyst in the synthesis of tetrazoles

A new neodymium complex on renewable magnetic biochar nanoparticles as an environmentally friendly, recyclable and efficient nanocatalyst in the homoselective synthesis of tetrazoles

“…A solution of TETA was injected drop by drop into a solution of 5-BrSA under stirring in the presence of acetic acid (4 drops). The reaction mixture was refluxed for 4 h. The synthesized yellow precipitate was filtered, washed with MeOH, and then dried at r.t. 62 As is known, bromine acts as an electron-donating group by sharing non-bonding electron pairs through resonance. While due to the high electronegativity of bromine, it acts as an electron-withdrawing group through induction effects.…”

Homoselective synthesis of tetrazole derivatives using copper complex anchored on mesoporous KIT‐6 as a reusable, highly efficient, and environmentally green nanocatalyst

“…The synthesis of tetrazoles has been catalyzed by various transition metals due to their acidic Lewis properties. Cobalt, copper, neodymium, nickel, palladium, samarium, cadmium, lanthanum, and manganese are among the metals used for this purpose 5,43,52–56 . Tetrazoles have a wide range of applications in material chemistry, medicinal chemistry, coordination chemistry, biochemistry, explosives, agriculture, rocket propellants, and photographic agents.…”

Preparation of mesoporous silica and organosilica nanostructures functionalized with C2‐symmetric diol and their catalytic performance in diethylzinc addition to aromatic aldehydes

“…Heterogeneous asymmetric catalysis is one of alternative approaches and has been a remarkable area in recent years 3,11–14 . The reasons for the increased interest in heterogeneous catalysis are that the heterogeneous catalyst used in the reaction medium is easy to recover and reusable, and the catalyst can be easily separated from the product 15–20 . Immobilization of one of privileged chiral ligands on a support material is one of the first approaches that come to mind to prepare an effective heterogeneous catalyst 21–23 .…”