Forough. Sepehr, Sadegh. Allameh, Abolghasem. Davoodnia 2021. Synthesis of Tetrahydrobenzo[b]pyran Derivatives Using H2WO4/ Fe3O4 Magnetic NanocatalystNowaday, the application of environmentally friendly catalysts has been interested in the synthesis of many heterocyclic compounds. Using these catalysts, reactions . Annals of the Romanian Society for Cell Biology. (Jul. 2021), 19067–19072.