Results 71 to 80 of about 229,704 (190)
Trifluoromethylation of Allylsilanes under Photoredox Catalysis
Organic Letters, 2013 A new catalytic method to access allylic secondary CF3 products is described. These reactions use the visible light excited Ru(bpy)3Cl2·6H2O catalyst and the Togni or Umemoto reagent as the CF3 source. The photoredox catalytic manifold delivers enantioenriched allylic trifluoromethylated products not accessible under Cu(I) catalysis.
Mizuta, S +9 more
openaire +3 more sources
Glass wool supported ruthenium complexes: versatile, recyclable heterogeneous photoredox catalysts
, 2020 The present study describes the development of heterogeneous photoredox catalysts based on ruthenium complexes anchored onto a glass surface (glass wool).
Garden, Simon J. +4 more
core +1 more source
Iron Photoredox Catalysis–Past, Present, and Future
, 2023 Photoredox catalysis of organic reactions driven by iron has attracted substantial attention throughout recent years, due to potential environmental and economic benefits.
Aleksandra Ilic +7 more
core +1 more source
Asymmetric 1,4-functionalization of 1,3-enynes via dual photoredox and chromium catalysis
Nature Communications, 2022 In contrast to the better-studied ionic pathway, radical-involved asymmetric 1,4-functionalization of 1,3-enynes remains a prominent challenge. Here, the authors describe the asymmetric three-component 1,4-dialkylation of 1,3-enynes via dual photoredox ...
Feng-Hua Zhang +3 more
doaj +1 more source
Deal;Photoredox Catalysis for the Cycloaddition Reactions
ChemCatChem, 2020 AbstractCycloaddition reaction is a powerful tool for the synthesis of cyclic structures in a green way. High‐energy ultraviolet (UV) light was strictly required for the traditional photochemical processes. However, in the past ten years, discovery of photoredox catalysis for the cycloaddition reactions have attracted significant attention.
Tong Zhang, Yu Zhang, Shoubhik Das
openaire +3 more sources
Switching on elusive organometallic mechanisms with photoredox catalysis [PDF]
Nature, 2015 Transition-metal-catalysed cross-coupling reactions have become one of the most used carbon-carbon and carbon-heteroatom bond-forming reactions in chemical synthesis. Recently, nickel catalysis has been shown to participate in a wide variety of C-C bond-forming reactions, most notably Negishi, Suzuki-Miyaura, Stille, Kumada and Hiyama couplings ...
Jack A. Terrett +3 more
openaire +2 more sources
Tetrahedron ChemPhotoredox catalysis has become an invaluable tool for the construction of organic molecules, allowing for unparalleled control over radical intermediates enabled by the mild conditions achieved through visible-light activation of a photocatalyst.
K.A. Viraj Miyuranga +2 more
doaj +1 more source
Multiphoton photoredox catalysis enables selective hydrodefluorinations
Late-stage modification of complex molecules via site-selective hydrodefluorination is a challenging endeavor. The selective activation of carbon-fluorine (C–F) bonds in the presence of multiple C–F bonds is of importance in organic synthesis and drug ...
Murugesan, Kathiravan +5 more
core +1 more source
Functionalised oximes : emergent precursors for carbon-, nitrogen- and oxygen-centred radicals [PDF]
, 2016 The author thanks EaStCHEM for financial support.Oxime derivatives are easily made, are non-hazardous and have long shelf lives. They contain weak N–O bonds that undergo homolytic scission, on appropriate thermal or photochemical stimulus, to initially ...
John C. Walton +2 more
core +1 more source
Photoredox-Catalyzed Phosphonocarboxylation of Allenes with Phosphine Oxides and CO2
, 2023 Phosphonocarboxylation of allenes with diarylphosphine oxides and CO2 via visible-light photoredox catalysis was developed for the first time. This work provided practical and sustainable access to highly valuable but otherwise difficult-to-access linear
Jia-Hao Zeng (6030554) +9 more
core +1 more source