Results 11 to 20 of about 388 (112)
Synthesis of polyheterocycles via multicomponent reactions
Organic & Biomolecular Chemistry, 2018 Polyheterocycles are one of the most desired synthetic targets due to their numerous and valuable applications in various fields.
Ilich A. Ibarra +2 more
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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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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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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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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
openaire +2 more sources
, 2021 The visible-light-driven switchable phosphorylation of cyanoaromatics with the 1,6-enyne moiety for the diverse and selective synthesis of phosphorylated polyheterocycles, including phosphorylated aminophosphonates, iminophosphonates, and ketones, has ...
Yufei Yang (1851586) +17 more
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Cationic Gold(I)-Catalyzed Cascade Bicyclizations for Divergent Synthesis of (Spiro)polyheterocycles
, 2020 We herein report an expeditious synthetic strategy to access diverse (spiro)polyheterocycles from easily available starting materials in two operational steps including an Ugi four-component reaction and a cationic gold(I)-catalyzed cascade bicyclization.
Song L. +4 more
core +3 more sources
, 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 ...
Ian R. Hazelden (6371087) +6 more
core +2 more sources
, 2016 A new diversity-oriented synthesis pathway for the fabrication of a pyrimidine-embedded polyheterocycles library was developed for potential interactions with diverse biopolymers.
Seung Bum Park (197493) +2 more
core +1 more source
, 2023 This study describes a visible-light-induced cascade reaction for preparing cyanoalkyl-containing polyheterocycles initiated by the photoinduced radical cascade addition of N-arylacrylamide derivatives using cyclic oxime esters as radical sources ...
Shan-Shan Zhu (9925702) +15 more
core +1 more source