Efficient One‐Pot Solvent‐Free Synthesis of 1H‐Pyrazolo[1,2‐b]phthalazine‐5,10‐diones Catalyzed by Sulfonic Acid Functionalized Nanoporous Silica (SBA‐Pr‐SO3H) |
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| Authors: | Ghodsi Mohammadi Ziarani Nina Hosseini Mohtasham Alireza Badiei Negar Lashgari |
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| Affiliation: | 1. Department of Chemistry, Alzahra University, P.O. Box 1993891176, Tehran, Iran;2. School of Chemistry, College of Science, University of Tehran, P.O Box 14155‐6455, Tehran, Iran |
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| Abstract: | A green protocol has been developed for the synthesis of 1H‐pyrazolo1,2‐b]phthalazine‐5,10‐diones by one‐pot cyclocondensation reaction of phthalhydrazide, aromatic aldehydes, and malononitrile or ethyl cyanoacetate using sulfonic acid functionalized SBA‐15 (SBA‐Pr‐SO3H) as a heterogeneous solid acid catalyst under solvent‐free conditions. |
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| Keywords: | Multicomponent reaction Phthalhydrazide Functionalized SBA‐15 One‐pot synthesis Heterogeneous catalysis |
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