Results 51 to 60 of about 23,969 (258)
Strategies Towards the Synthesis of N2-Substituted 1,2,3-Triazoles
Anais da Academia Brasileira de Ciências, 2019 The chemistry of 1,2,3-triazoles gained much attention since the discovery of the copper catalyzed Alkyne-azide cycloaddition (CuAAC) reaction which delivers exclusively the 1,4-regioisomer in high yields.
RODRIGO OCTÁVIO M.A. DE SOUZA +1 more
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Beilstein Journal of Organic Chemistry, 2016 This report describes a highly enantioselective oxidative sp3 C–H arylation of N-aryltetrahydroisoquinolines (THIQs) through a dual catalysis platform. The combination of the photoredox catalyst, [Ir(ppy)2(dtbbpy)]PF6, and chiral copper catalysts provide
Pierre Querard +3 more
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An Unexpected Reaction between Diaryliodonium Salts and DMSO
Organics, 2022 Diaryliodonium salts are useful arylating reagents that have been exploited widely. In this Communication, we demonstrate that heating diphenyliodonium triflate in the solvent DMSO leads to an unexpected arylation reaction.
Konrad Kepski, Wesley James Moran
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A Dual Catalytic Platform for Enabling sp3 α C–H Arylation & Alkylation of Benzamides [PDF]
, 2019 A dual catalytic sp3 a C–H arylation & alkylation of benzamides with organic halides is described. This protocol exhibits excellent chemoselectivity and exquisite site-selectivity, offering a complementary reactivity mode to existing sp3 arylation or ...
Jessica, Giacoboni +5 more
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Direct catalytic arylation of heteroarenes with meso-bromophenyl-substituted porphyrins
Beilstein Journal of Organic Chemistry, 2017 The arylation of mono-, di- and tetra-meso-bromophenyl-substituted porphyrins with the heteroarenes containing “acidic” C–H bonds, such as benzoxazole, benzothiazole and N-methylimidazole was studied in the presence of three alternative catalytic systems:
Alexei N. Kiselev +5 more
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Diversity-Oriented Two-Step Annulative π-Extension Enables Access to Structurally Complex Nanographenes. [PDF]
Angew Chem Int Ed EnglPd‐catalyzed C–H arylation of polycyclic aromatic hydrocarbons (PAHs) with various aryltrimethylsilanes enables the preparation of structurally complicated arylated PAHs, which can be further transformed to nanographenes in a manner of two‐step annulative π‐extension (APEX) reaction.
Katsuragawa H +5 more
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Birch reductive arylation by mechanochemical anionic activation of polycyclic aromatic compounds
Nature CommunicationsBirch reduction is a well-known process for transforming aromatic compounds. The reduction of aromatic rings using alkali metals produces anionic species that react with protons or electrophiles.
Yoshifumi Toyama +3 more
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Beilstein Journal of Organic Chemistry, 2012 This review highlights the development of palladium-catalyzed C–H and N–H functionalization reactions involving indole derivatives. These procedures require unactivated starting materials and are respectful of the basic principle of sustainable chemistry
Gianluigi Broggini +3 more
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Arylation Chemistry for Bioconjugation [PDF]
Angewandte Chemie International Edition, 2019 Abstract Bioconjugation chemistry has been used to prepare modified biomolecules with functions beyond what nature intended. Central to these techniques is the development of highly efficient and selective bioconjugation reactions that operate under mild, biomolecule compatible conditions.
Chi Zhang +4 more
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Regioselective Arylation of 1,3-Dimethyllumazine and Its 5-Oxide by Diazonium Salts
Pteridines, 1997 A new method to introduce an aryl group directly into the pteridine nucleus by the action of arene diazonium salt in an aqueous alkaline solution is described. 1,3-Dimethyllumazine and benzene diazonium chloride reacts in an aqueous solution at pH 8-9 to
Sugimoto Takashi +3 more
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