The preparation and characterization of boehmite nanoparticles-TAPC: a tailored and reusable nanocatalyst for the synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-ones

A one-pot multi-component, green, and highly efficient protocol has been described for the synthesis of a wide range of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-ones using TAPC supported on boehmite nanoparticles (BNPs-TAPC) as an eco-friendly and recyclable nanocatalyst in excellent yields under solvent-free conditions. A short reaction time, easy and quick isolation of the products, use of inexpensive heterogeneous nanocatalysts, a solvent-free process and excellent chemoselectivity are other remarkable features of this environmentally benign protocol. BNPs-TAPC was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and FT-IR methods.