@article{Niknam_Sajadi_Hosseini_Baghernejad_2024, title={Silica-bonded n-propyldiethylenetriamine sulfamic acid as a recyclable solid acid catalyst for the synthesis of coumarin and biscoumarin derivatives}, volume={4}, url={https://oiccpress.com/iranian-journal-of-catalysis/article/silica-bonded-n-propyldiethylenetriamine-sulfamic-acid-as-a-recyclable-solid-acid-catalyst-for-the-synthesis-of-coumarin-and-biscoumarin-derivatives/}, abstractNote={Silica-bonded n-propyldiethylenetriamine sulfamic acid (SBPDSA) was found as an efficient solid acid for the synthesis of coumarins. Coumarin derivatives were obtained via the Pechmann condensation reaction of phenols and β-keto-esters at 80 oC under solvent-free conditions. Also, biscoumarins were obtained via the condensation of aldehydes and 4-hydroxycoumarin in water at reflux conditions. The heterogeneous solid acid showed much the same efficiency when used in consecutive reaction runs.}, number={3}, journal={Iranian Journal of Catalysis}, publisher={OICC Press}, author={Niknam, Khodabakhsh and Sajadi, Seyed Ahmad and Hosseini, Roghayeh and Baghernejad, Mojtaba}, year={2024}, month={Feb.}, keywords={Aromatic aldehydes, Solid acids, Coumarins, Pechmann reaction, Biscoumarins, Silica-bonded n-propyldiethylenetriamine sulfamic acid, Catalyst} }