The Application of NanoCatalyst Fe۳O۴-Guanidine/Go-Guanidine in Knoevenagel Reaction

In the present study, a novel magnetic Fe۳O۴-Guanidine/Go-Guanidine material with a layered structure is prepared and characterized, and its catalytic performance is investigated in the one-pot condensation of aldehydes with ethyl cyanoacetate. Several techniques such as energy dispersive X-ray spectroscopy (EDX), thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD) and vibrating sample magnetometer (VSM) were applied to characterized the Fe۳O۴-Guanidine/Go-Guanidine catalyst. This nanomaterial showed an excellent efficiency in the Knoevenagel condensation of aldehydes with ethyl cyanoacetate and gave the corresponding coupling products in high yields. This catalyst was also recovered and reused several times while retaining its performance and stability.