@article{Hosseini-Sarvari_Najafvand-Derikvandi_2024, title={Synthesis of 4-(trifluoromethyl) coumarins using nano sulfated-titania as solid acid catalyst under solvent-free conditions}, volume={6}, url={https://oiccpress.com/iranian-journal-of-catalysis/article/synthesis-of-4-trifluoromethyl-coumarins-using-nano-sulfated-titania-as-solid-acid-catalyst-under-solvent-free-conditions/}, abstractNote={Nano sulfated titania was tested as solid acid heterogeneous catalyst for the synthesis of 4-(Trifluoromethyl) coumarin and coumarin derivatives under solvent-free condition. Factorial design evidenced a positive effect of reaction temperature, amount of catalyst, and solvents.  This nano-sized sulfated titania has been prepared by a sol-gel hydrothermal process. The prepared sulfated titania showed high catalytic activity in the synthesis of 4-(Trifluoromethyl) coumarin and coumarin derivatives. This method is of great value because of its environmentally benign character, easy handling, high yields, convenient operation, and green. FT-IR studies show that the catalyst can be reused for acylation without loss of catalytic activity.}, number={5}, journal={Iranian Journal of Catalysis}, publisher={OICC Press}, author={Hosseini-Sarvari, Mona and Najafvand-Derikvandi, Sepideh}, year={2024}, month={Feb.}, keywords={Solvent-free condition, Nano sulfated-titania, Coumarins, Pechmann reaction} }