Results 1 to 10 of about 44,043 (291)
Molecules, 2021 Pyrazolothiazole-substituted pyridine conjugates are an important class of heterocyclic compounds with an extensive variety of potential applications in the medicinal and pharmacological arenas.
Islam H. El Azab +2 more
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SynOpen, 2021 Copper ferrite (CuFe2O4) magnetic nanoparticles (MNPs) were synthesized via thermal decomposition and applied as a reusable and green catalyst in the synthesis of functionalized 4H-pyran derivatives using malononitrile, an aromatic aldehyde, and a β ...
Mina Ghassemi, Ali Maleki
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A Facile and Highly Efficient Three Component Synthesis of Pyran and Chromene Derivatives in the Presence of Nano SnO2 as a catalyst [PDF]
شیمی کاربردی روز, 2015 Nano tin dioxide was employed as a catalyst for efficient and facile preparation of pyran derivatives via the one-pot three component condensation reaction of various aldehydes with malononitrile and dimedone.
سید محمد وحدت +2 more
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Frontiers in Chemistry, 2021 A series of novel pyran-linked phthalazinone-pyrazole hybrids were designed and synthesized by a facile one-pot three-component reaction employing substituted phthalazinone, 1H-pyrazole-5-carbaldehyde, and active methylene compounds. Optimization studies
M. Shaheer Malik +11 more
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Acta Chimica Slovenica, 2021 In this work the multi-component reactions of either of the arylhydrazocyclohexan-1,3-dione derivatives 3a–c with either of benzaldehyde (4a), 4-chlorobenzaldehyde (4b) or 4-methoxybenzaldehyde (4c) and either malononitrile (5a) or ethyl cyanoacetate (5b)
Rafat M Mohareb +2 more
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Reactive organoallyl species generated from aryl halides and allene: allylation of alpha,beta-unsaturated aldehydes and cyclic ketones employing Pd/In transmetallation processes [PDF]
, 2008 Allylation of α,β-unsaturated aldehydes and cyclic ketones promoted by Pd/In transmetallation processes has been studied. The unsaturated aldehydes underwent regioselective 1,2-addition to afford secondary homoally alcohols.
Anwar +56 more
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5,6-Dihydro-2H-pyran-3(4H)-on als Baustein zur Synthese pyrananellierter Heterocyclen [PDF]
, 1984 Während 5,6-Dihydro-2H-pyran-3(4H)-on (3) sich mit ortho-substituierten Phenylcarbonylverbindungen nur in Einzelfällen regioselektiv zu pyrananellierten Heterocyclen umsetzt - z. B.
Eiden, Fritz, Wanner, Klaus Th.
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Ethyl 2,2-dimethyl-4-oxo-6-phenyl-3,4-dihydro-2H-pyran-5-carboxylate
IUCrData, 2016 The title compound, C16H18O4, is a derivative of 3,4-dihydro-2H-pyran-4-one. The plane of the pyranone ring system forms a dihedral angle of 42.76 (10)° with that of the phenyl group.
N. Sharmila +3 more
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Adsorption Behaviour of [(4-Hydroxy-6-methyl-2-oxo-2Hpyran- 3-yl)-(4-methoxy-phenyl)-1methyl]-urea on Stainless Steel in Phosphoric Media [PDF]
, 2009 The adsorption of [(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-(4-methoxy-phenyl)- methyl]-urea on iron in phosphoric media was studied by using electrochemical technique. The adsorption mechanism was investigated using adsorption isotherms.
Ajanaku, K. O. +4 more
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First examples of pyran based colorants as sensitizing agents of p-Type Dye-Sensitized solar cells [PDF]
, 2017 Three different pyran based dyes were synthesized and tested for the first time as photosensitizers of NiO based p-type dye-sensitized solar cells (p-DSSC).
Bonomo, Matteo +4 more
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