RHA/TiO2-bip-NH2+NO3− as an efficient catalyst for the solvent-free synthesis of 1,8-dioxo-decahydroacridine and 2,3-dihydroquinazolin-4(1H)-one derivatives

Key Points

• The aim is to evaluate the efficacy of a novel catalyst in synthesizing specific organic compounds under solvent-free conditions.
• Synthesis and characterization of RHA/TiO2-[bip]-NH2+NO3− catalyst using FT-IR, ¹H NMR, ¹³C NMR, TEM, XRD, XPS, TGA, EDX, and SEM.
• Evaluation of catalytic performance in synthesizing 1,8-dioxo-decahydroacridine and 2,3-dihydroquinazolin-4(1H)-one derivatives.
• Investigation of catalyst reusability over five consecutive runs.
• The catalyst facilitated the synthesis of the target compounds in very short reaction times.
• Products were obtained with excellent yields under solvent-free conditions.
• The catalyst remained stable and reusable for at least five consecutive runs, highlighting its efficiency.