Synthesis of pyridinium-based salts: Catalytic application at the synthesis of six membered O-heterocycles
作者:Saeed Babaee、Mohammad Ali Zolfigol、Mahmoud Zarei、Maryam Abbasi、Zahra Najafi
DOI:10.1016/j.mcat.2019.110403
日期:2019.10
[PySO3H]FeCl4 as a magnetic molten salts was also investigated. Three categories of six membered O-heterocyclic compounds such as 2-amino-4H-chromene, 2-amino-4,8-dihydropyrano and 2-amino-4H-pyrans were prepared in the presence of a catalytic amount of the above said molten salts. These synthesized O-heterocyclic compounds are highly regarded due to their biological activities.
s-Triazinium-based ionic liquid immobilized on silica-coated Fe3O4 magnetic nanoparticles: an efficient and magnetically separable heterogeneous catalyst for synthesis of 2-amino-4,8-dihydropyrano[3,2-b]pyran-3-carbonitrile derivatives for antioxidant and antifungal evaluation studies
method, vibrating sample magnetometery and thermo-gravimetric analysis. These nanoparticles were identified as an efficientcatalyst for one-pot three-component synthesis of 4,8-dihydropyrano[3,2-b]pyran derivatives in excellent yields. The catalyst was easily separated by magnetic decantation, and the recoverednanoparticles were reused for four fresh runs without any significant loss of catalytic activity