One-pot, three-component, selective synthesis of the polyfunctionalized 4H-pyran and 4H-benzo[b]pyran derivatives in the presence of a highly efficient molecular sieve-supported zinc catalyst [PDF]
Green Processing and Synthesis, 2018 A series of pentasubstituted 4H-pyrans and tetrahydrobenzo[b]pyrans are synthesized with excellent yields via a one-pot condensation of aromatic aldehydes, malononitrile, and a dicarbonyl compound, ethyl acetoacetate, acetyl-acetone or dimedone, in the ...
Magyar Ágnes, Hell Zoltán
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Solvent-free mechanochemical multicomponent preparation of 4H-pyrans catalyzed by Cu2(NH2-BDC)2(DABCO) metal-organic framework [PDF]
Heliyon, 2023 4H-pyrans have been prepared through a mechanochemical multicomponent reaction (MCR) of different aldehydes, malononitrile, and various 1,3-dicarbonyl compounds, catalyzed by an amine-functionalized metal-organic framework (MOF) Cu2(NH2-BDC)2(DABCO) as a
Zahra Akhlaghi +4 more
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Zr-MOF-glutaraldehyde-Adn@Fe3O4 nanocomposite: as a new adsorbent for removal of methylene blue and heterogeneous nanocatalyst for the synthesis of tetrahydrobenzo[b]pyran derivatives [PDF]
Scientific ReportsIn this research, a magnetic hybrid material (Zr-MOF-glutaraldehyde-Adn@Fe3O4) consisting of UiO-66-NH2 as a stable and unique metal-organic framework, and Fe3O4 nanoparticles was synthesized.
Fatemeh Yazdiamiri +3 more
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Metal-organic framework catalysed multicomponent reactions towards the synthesis of Pyrans [PDF]
HeliyonMetal-Organic Frameworks (MOFs) gaining increasing interest in heterogeneous catalysis owing to their advantageous properties such as superior porosity, high surface area, ample catalytic sites.
Subrahmanya Ishwar Bhat, Chinmay Bhat
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Synthesis of Polyfunctionalized 4H-Pyrans [PDF]
Journal of Chemistry, 2013 Amberlyst A21 catalyzed one-pot three-component coupling of aldehyde and malononitrile with active methylene compounds such as acetylacetone and ethyl acetoacetate for the synthesis of pharmaceutically important polyfunctionalized 4H-pyrans has been ...
Manisha Bihani +2 more
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Entry to new spiroheterocycles via tandem Rh(II)-catalyzed O–H insertion/base-promoted cyclization involving diazoarylidene succinimides [PDF]
Beilstein Journal of Organic ChemistryA facile approach to novel medicinally relevant spiro heterocyclic scaffolds (namely furan-2(5H)-ones, tetrahydrofurans and pyrans spiro-conjugated with the succinimide ring) has been developed.
Alexander Yanovich +4 more
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Acta Chimica SlovenicaIn this study, the efficient method was introduced for the preparation of copper-periodic mesoporous organosilica nanocomposites (Cu@MOS NCs) as a high performance heterogeneous nanocatalyst. Then the nanocomposite was characterized with various methods
Roghaye Ramazannejad lori +3 more
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Molecules, 2022 Pyrans are one of the most significant skeletons of oxygen-containing heterocyclic molecules, which exhibit a broad spectrum of medicinal applications and are constituents of diverse natural product analogues.
Suresh Maddila +2 more
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Starch-derived magnetic nanoparticles (Fe3O4@C-SO3H): Synthesis, Characterization and Its application on the preparation of dihydropyrano[c]chromenes, 2‑Amino-3-cyano‑4H‑pyrans and 2-amino-4H-chromenes derivatives [PDF]
شیمی کاربردی روز, 2019 In this study, a novel biomass and Starch-derived carbonaceous solid acid catalyst (Fe3O4@C-SO3H) that has superparamagnetism with high acid density was successfully prepared for the first time by incomplete hydrothermal carbonization of Starch followed ...
Fatemeh Khorsi Damghani +2 more
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BMC Chemistry, 2021 Background The nano-sized particles enhance the exposed surface area of the active part of the catalyst, thereby increasing the contact between precursors and catalyst considerably. In this study, nano-SiO2/1,5-diazabicyclo[4.3.0]non-5-en was synthesized,
Maryam Mehravar +3 more
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