This study aimed to synthesize the compound of copper and 4,4'-oxysbisbenzoic acid (CuOBA), analyze its physical and chemical properties and employ it as a heterogeneous catalyst for the C-O coupling reaction of 2-acetyl-1-napthol and benzyl ether. The metal-organic framework material CuOBA was synthesized using the solvothermal method. The physicochemical characteristics of CuOBA were determined by several different analytical techniques, including X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and Fourier transform infrared (FT-IR). CuOBA was used as a heterogeneous catalyst for the coupling reaction of the C-O connection between 2-acetyl-1-napthol and benzyl ether in good yield considering the factors of time, temperature, the concentration of reactants, solvents, and the mass of the catalyst. The results revealed that CuOBA, a catalyst for organic reactions, gave a conversion of 75.57%. The CuOBA catalyst was possible to reuse numerous times in the coupling reaction of 2-acetyl-1-napthol and benzyl ether without noticeable deterioration in catalytic efficiency. The direct esterification to produce 2-acetyl-1-naphthyl benzoate assisted by the CuOBA catalysts has not been reported in the literature before.
The copper-based metal organic frameworks - CuOBA was synthesized by a solvothermal method. The physicochemical properties and structural characteristics of the CuOBA material were examined by several techniques, including Fourier-transform Infrared (FT-IR), X-ray powder diffraction (PXRD), thermal gravimetric analysis (TGA), Transmission Electron Microscopy (TEM). The CuOBA material was used as an efficient heterogeneous catalyst for the coupling reaction of phenyl acetylene and ethyl glyoxalate in the presence of 1 equivalent morpholine as a base to form 1.2-dicarbonyl-3-ene product. The yield of transformation was more than 90% at 80oC with 9 mol% CuOBA catalyst after 4 hours. The results showed that CuOBA could be recovered and reused seven times without a significant degradation in its catalytic activity.
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