Asymmetric dearomatization/cyclization enables access to polycyclic chemotypes [PDF]
, 2016 Enantioenriched, polycyclic compounds were obtained from a simple acylphloroglucinol scaffold. Highly enantioselective dearomatization was accomplished using a Trost ligand-palladium(0) complex.
Boyce +30 more
core +1 more source
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
Dual Ni/photoredox-catalyzed asymmetric cross-coupling to access chiral benzylic boronic esters
Nature Communications, 2021 Metallaphototoredox catalysis has been rarely applied to reductive cross-couplings, in contrast to typical redox-neutral methods. Here, the authors report a mild Ni/photoredox-catalyzed reductive cross-coupling of aryl iodides and α-chloroboranes ...
Purui Zheng +5 more
doaj +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
Enantioselective Synthesis of Amines by Combining Photoredox and Enzymatic Catalysis in a Cyclic Reaction Network [PDF]
, 2018 Visible light-driven reduction of imines to enantioenriched amines in aqueous solution is demonstrated for the first time. Excitation of a new water-soluble variant of the widely used [Ir(ppy)3] (ppy = 2-phenylpyridine) photosensitizer in the presence of
Guo, Xingwei +4 more
core +1 more source
Chromium complexes for luminescence, solar cells, photoredox catalysis, upconversion, and phototriggered NO release [PDF]
, 2017 Some complexes of Cr(III) and Cr(0) have long been known to exhibit interesting photophysical and photochemical properties, but in the past few years important conceptual progress was made.
Büldt, Laura A., Wenger, Oliver S.
core +1 more source
Designing algorithms to aid discovery by chemical robots [PDF]
, 2018 Recently, automated robotic systems have become very efficient, thanks to improved coupling between sensor systems and algorithms, of which the latter have been gaining significance thanks to the increase in computing power over the past few decades ...
Cronin, Leroy +2 more
core +1 more source
Radical Cascade Combining Cross‐Olefin Coupling with the Smiles‐Truce Rearrangement
Angewandte Chemie International Edition, EarlyView.We present a cobalt‐catalysed radical cascade that efficiently merges two alkene starting materials to form multiple bonds in a single step. The process begins with a cobalt‐catalysed hydrogen‐atom transfer‐to a styrene double bond, followed by a Giese addition.
Jingyang Qin +3 more
wiley +1 more source
A Non-Heme Iron Photocatalyst for Light-Driven Aerobic Oxidation of Methanol [PDF]
, 2018 Non-heme (L)FeIIIand (L)FeIII-O-FeIII(L) complexes (L=1,1-di(pyridin-2-yl)-N,N-bis(pyridin-2-ylmethyl)ethan-1-amine) underwent reduction under irradiation to the FeIIstate with concomitant oxidation of methanol to methanal, without the need for a ...
Browne, Wesley R +4 more
core +3 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