Iranian Journal of Catalysis (IJC) Zr-MOF-N=CH-C6H4-OSO3H Catalyst for the Construction of New Substituted 4-Aminocoumarin Analogs Volume 14 (2024) Issue 2, June 2024 2024 05 11 Zr-MOF-N=CH-C6H4-OSO3H Catalyst for the Construction of New Substituted 4-Aminocoumarin Analogs 10.57647/j.ijc.2024.1402.12 EN Masoumeh Goudarzvand Chegini Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran. 0009-0004-9280-394X Masoud Mokhtary Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran. 0000-0003-3763-7139 Afshin Pourahmad Department of Chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran. 0000-0003-2007-8991 Journal Article 2024 05 11   In this study, the preparation of a new functionalized acidic metal-organic framework nanocatalyst formulated as Zr-MOF-N=CH-C6H4-SO3H has been reported. After characterization using different analysis methods such as FT-IR, XRD, SEM, EDX, TGA, and TEM, the average size of the nanoparticles was found to be between 42.5 and 50.4 nm in diameter. The Nanocatalyst was utilized in the synthesis of novel substituted 4-aminocoumarin analogs via one-pot three-component reaction of 4-aminocoumarin, arylaldehyde or 3-(2-aryldiazenyl)-2-hydroxybenzaldehyde, and 6-hydroxyuracil or 1,3-dimethylbarbituric acid in good-to-excellent yields in ethanol at reflux conditions. A λmax of 362.7 nm was observed for compound 4e. Simple work-up of the process, mild reaction conditions, no by-products and easy reusability of the nanocatalyst are some of the advantages of the procedure.   Highlights    ·         A novel series of substituted 4-aminocoumarin analogs were synthesized. ·         A new functionalized acidic metal-organic framework catalyst Zr-MOF-N=CH-C6H4-OSO3H was introduced. ·         High yields and easy work-up procedure are some advantages of this method. ·         A λmax of 362.7 nm was observed for compound 4e. ·         The catalyst is easily recycled.