The synthesis of aryl benzoate derivatives by using of copper (II) oxid nanoparticles

In recent years,the hetrogenization of homogeneous catalysts has attracted immense attention[1]. Although many homogeneous catalysts demonstrate high selectivity and can be used to control the stereo chemistry and regio chemistry of the reaction products[2]. Recovery and reusability of catalysts are highly desirable from both economic and environmental standpoints. Copper remains one of the most important metal catalysts for this purpose because of the ability of the copper atom to act as a single –electron and or a two-electron mediator and as a lewis acid. Moreover,copper can act as either an electrophile or nucleophile,depending upon its oxidation state and the reaction conditions. Oxidatives C-O cross-coupling is a one of the most important methods for the synthesis of various oxygen-bearing organic compounds,such as ethers, esters, oxazoles or carbamates. In this paper our work on heterogeneous catalysts and C-O cross-coupling reactions.Initially silica-coated feriitenanoparticles (Fe3-O4@SiO2) treatedwith (3Aminopropyl)trimethoxysilane(APTMS), isatoic anhydride and copper(II) acetate in solvent give the new magnetic catalyst.The magnetic catalyst was charactrized by FT-IR, XRD, VSM, EDX, SEM. We examined new magnetic catalyst for synthesis of aryl benzoate derivatives.Finally the products were characterized by FT- IR and 1H NMR.