Copper (II) supported on a post-modied magnetic pectin Fe3O4@PectinImidazoleSO3H-Cu(II): An ecient biopolymer-based catalyst for selective oxidation of alcohols with aqueous TBHP

Abstract

Designing a catalyst that combines activity, selectivity, and simple recovery as well as follows green chemistry instructions is of great importance. In the present study, Fe3O4@PectinImidazoleSO3H-Cu(II) was synthesized as an ecient and biopolymerbased magnetic catalyst for the oxidation of benzyl alcohols to aldehydes using tertbutyl hydroperoxide as an oxidant under solvent-free conditions. The catalyst was characterized using Fourier transform infrared spectroscopy, powder X-ray diraction, vibrating sample magnetometer, eld emission scanning electron microscopy, energy dispersive spectroscopy, transmission electron microscopy, and inductively coupled plasma atomic emission spectroscopy. The results indicated that our catalyst was quite active in oxidizing the benzyl alcohols to their corresponding aldehydes in the presence of tbutyl hydroperoxide (TBHP). The catalyst eciency with low catalyst loading, convenient work-up, isolation of pure products, use of inexpensive metal instead of precious metals, solvent-free condition, use of eco-friendly support, and the sustainability of catalyst up to at least 5 consecutive runs without a special drop-in activity are some of the remarkable advantages of this protocol