Results 11 to 20 of about 517 (172)
Complex Polyheterocycles and the Stereochemical Reassignment of Pileamartine A via Aza-Heck Triggered Aryl C–H Functionalization Cascades [PDF]
Journal of the American Chemical Society, 2021 Structurally complex benzo- and spiro-fused N-polyheterocycles can be accessed via intramolecular Pd(0)-catalyzed alkene 1,2-aminoarylation reactions. The method uses N-(pentafluorobenzoyloxy)carbamates as the initiating motif, and this allows aza-Heck ...
Javier García-Cárceles +2 more
exaly +4 more sources
ELECTROOPTICAL PROPERTIES OF THIN FILMS OF POLYHETEROCYCLES
Le Journal de Physique Colloques, 1983 Some conducting polyheterocycles prepared by electroinitiated polymerization as thin films on electrodes change color reversibly when they are electrochemically cycled. As an example, polypyrrole is synthetized in an oxidized form and may be reduced reversibly between 0 and - 0,7 volt vs SCE.
Gazard, M. +4 more
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ChemistryEuropeCis‐1,3‐functionalized carbocycles and saturated heterocycles are ubiquitous motifs in natural products, pharmaceuticals, and bioactive compounds.
Jiayi Zhu +2 more
doaj +2 more sources
Copper-Catalyzed Modular Assembly of Polyheterocycles [PDF]
The Journal of Organic Chemistry, 2020 Easy operation, readily accessible starting materials, and short syntheses of the privileged scaffold indeno[1,2-c]isoquinolinone were achieved by an multicomponent reaction (MCR)-based protocol via an ammonia-Ugi-four component reaction (4CR)/copper-catalyzed annulation sequence.
Qian Wang +5 more
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Molbank, 2023 The new polyheterocyclic compound, 2-benzyl-7-(4-chlorophenyl)-3-morpholino-6-((1-phenyl-1H-1,2,3-triazol-4-yl)methyl)-6,7-dihydro-5H-pyrrolo[3,4-b]pyridin-5-one, was synthesized by a sequential combination of 4-chlorobenzaldehyde, (1-phenyl-1H-1,2,3 ...
Perla Islas-Jácome +6 more
doaj +1 more source
Pharmaceuticals, 2022 A highly efficient approach to a new indolizine scaffold fused with pyrrolo[1,2-c]pyrimidine was achieved via one-pot three-component coupling followed by an oxidative cyclization reaction.
Seonghyeon Nam +4 more
doaj +1 more source
Chemistry Proceedings, 2021 The synthesis of five new bis-furanyl-pyrrolo[3,4-b]pyridin-5-ones in 30 to 40% yields through a domino sequence based on the Ugi-Zhu three-component reaction is described.
Ivette Morales-Salazar +5 more
doaj +1 more source
An Easy Access to Furan-Fused Polyheterocyclic Systems
Molecules, 2022 Nitrostilbenes characterized by two different or differently substituted aryl moieties can be obtained from the initial ring-opening of 3-nitrobenzo[b]thiophene with amines. Such versatile building blocks couple the well-recognized double electrophilic reactivity of the nitrovinyl moiety (addition to the double bond, followed by, e.g., intramolecular ...
Alice Benzi +6 more
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Mo-Catalyzed One-Pot Synthesis of N-Polyheterocycles from Nitroarenes and Glycols with Recycling of the Waste Reduction Byproduct. Substituent-Tuned Photophysical Properties. [PDF]
Chemistry, 2021 A catalytic domino reduction–imine formation– intramolecular cyclization–oxidation for the general synthesis of a wide variety of biologically relevant N-polyheterocycles, such as quinoxaline- and quinoline-fused derivatives, and phenanthridines, is ...
Hernández-Ruiz R +6 more
europepmc +2 more sources
Iodine/Palladium Approaches to the Synthesis of Polyheterocyclic Compounds [PDF]
The Journal of Organic Chemistry, 2010 A simple, straightforward strategy for the synthesis of polyheterocyclic compounds (PHCs) is reported, which involves iterative cycles of palladium-catalyzed Sonogashira coupling, followed by iodocyclization using I(2) or ICl. A variety of heterocyclic units, including benzofurans, benzothiophenes, indoles, and isocoumarins, can be efficiently ...
Saurabh, Mehta, Richard C, Larock
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