Copper(II)-Ethanolamine Triazine Complex on Chitosan-Functionalized Nanomaghemite for Catalytic Aerobic Oxidation of Benzylic Alcohols

In this study a novel, effective and recoverable Cu(II)-catalyst was synthesized by incorporating of Cu(OAc)(2) within ethanolamine-triazine derivative (TAETA) attached to chitosan (Chs)-functionalized gamma-Fe2O3 nanoparticles [MNP@Chs/TAETACu(II)]. It was characterized by different techniques such as FT-IR, EDS, ICP, TEM, TGA and VSM. The as-prepared nanocomposite demonstrated high oxidation activity and desired selectivity in the aerobic oxidation of structurally diverse set of benzyl alcohols. Spectral results and leaching experiments revealed that this magnetically recoverable heterogeneous catalyst preserved its structure after it was reused several times. This protocol offers some beneficial features such as the use of oxygen as an ideal oxidant, stability of nanocomplex, easily catalyst separation by using an external magnetic field and efficient recycling as well as the lack of by-products. [GRAPHICS] .

Automated summary

A novel Cu(II)-catalyst was synthesized by incorporating it into chitosan-functionalized Fe2O3 nanoparticles, demonstrating high activity and selectivity in the oxidation reaction with oxygen as the oxidant. The magnetically recoverable heterogeneous catalyst maintained its structure after multiple reuses, offering easy separation, efficient recycling, and lack of by-products.