cerium oxide/alumminium oxide-nanocatalyst promoted the production of dihydropyrano[c]chromene derivatives

Due to various biological and pharmaceutical applications, derivations of dihydropyrano[c]chromene have received great attention from researchers. because of the considerable significance of these compounds, various methods with different conditions and catalysts have been used to synthesize them. however, some of these methods have disadvantages such as low efficiency, prolonged reaction time, toxic solvents. in this research, the performance of cerium oxide/aluminum oxide for synthesizing the derivatives of dihydropyrano (c) chromene as an effective and nonhomogeneous catalyst has been investigated. this method contains numerous advantages, which are discussed in the following.