Iranian Journal of Catalysis (IJC) Synthesis of 14H-dibenzo[a.j]xanthenes using Co@pyr/APTZCMNPs as a novel heterogeneous nanocatalyst Volume 7 (2017) Issue 3, September 2017 2024 02 03 Synthesis of 14H-dibenzo[a.j]xanthenes using Co@pyr/APTZCMNPs as a novel heterogeneous nanocatalyst EN Esmayeel Abbaspour-Gilandeh Young Researchers and Elites Club, Ardabil Branch, Islamic Azad University, Ardabil, Iran. Mehraneh Aghaei-Hashjin Young Researchers and Elites Club, Ardabil Branch, Islamic Azad University, Ardabil, Iran. Journal Article 2024 02 03 Co@pyr/APTZCMNPs was synthesized, and some of its characteristic analyses, such as Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and X-ray diffraction (XRD) were investigated. The results indicated that this heterogeneous catalyst was an excellent and reusable system to synthesize of 14H-dibenzo[a.j]xanthene derivatives through a one-pot condensation of β-naphthol and arylaldehydes at 90 °C under solvent-free conditions. Due to the magnetic nature of the catalyst, it could be easily recovered by an external magnetic field and comfortable reused at least five times without loss of its catalytic activity. High yields of the desired product, easy recovery of the catalyst and solvent-free conditions were some of the advantages of our methodology.