Electron Transfer Photoredox Catalysis: Development of a Photoactivated Reductive Desulfonylation of an Aza‐Heteroaromatic Ring

2020 ◽  
Vol 362 (15) ◽  
pp. 3110-3115
Author(s):  
Qiang‐Liu ◽  
Yu‐Xiu Liu ◽  
Hong‐Jian Song ◽  
Qing‐Min Wang
Keyword(s):  
Electron Transfer ◽  
Photoredox Catalysis ◽  
Heteroaromatic Ring

scholarly journals Cavity-promotion by pillar[5]arenes expedites organic photoredox-catalysed reductive dehalogenations

2021 ◽  
Author(s):  
Maximilian Schmidt ◽  
Birgit Esser
Keyword(s):  
Electron Transfer ◽  
Photoredox Catalysis ◽  
Photo Induced Electron Transfer

The efficiency of the photo-induced electron transfer in photoredox catalysis is limited by the diffusional collision of the excited catalyst and the substrate. We herein present cavity-bound photoredox catalysts, which...

scholarly journals Electron donor-free photoredox catalysis via an electron transfer cascade by cooperative organic photocatalysts

2018 ◽  
Vol 8 (14) ◽  
pp. 3539-3547 ◽  
Author(s):  
Lei Wang ◽  
Irina Rörich ◽  
Charusheela Ramanan ◽  
Paul W. M. Blom ◽  
Wei Huang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Electron Donor ◽  
Photoredox Catalysis

Electron transfer cascade in cooperative organic photocatalysts can prevent the use of sacrificial reagent for photoredox catalysis.

scholarly journals Chemistry With N-Centered Radicals Generated by Single-Electron Transfer-Oxidation Using Photoredox Catalysis

CCS Chemistry ◽  
2019 ◽  
pp. 38-49 ◽  
Author(s):  
Heng Jiang ◽  
Armido Studer
Keyword(s):  
Electron Transfer ◽  
Recent Literature ◽  
Bond Cleavage ◽  
Photoredox Catalysis ◽  
Proton Coupled Electron Transfer ◽  
Cascade Processes ◽  
Reactive N ◽  
Radical Generation ◽  
Cleavage Reactions ◽  
Oxidative Generation

This review covers the recent literature on oxidative generation of N-centered radicals using photoredox catalysis. The concept of proton-coupled electron transfer is briefly discussed. Applications of such reactive N-centered radicals in cascade processes comprising arene amidation, alkene amidation, C—C bond cleavage reactions, and remote C—H functionalization are addressed. In addition, novel reagents allowing for clean oxidative N-radical generation are discussed.

Surface‐Plasmonic‐Field‐Induced Photoredox Catalysis and Mediated Electron Transfer for Washing‐Free DNA Detection

2020 ◽  
Vol 59 (43) ◽  
pp. 19202-19208
Author(s):  
Jihyeon Kim ◽  
Jongkyoon Park ◽  
Seonhwa Park ◽  
Jeongwook Seo ◽  
Jeongwook Kwon ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Dna Detection ◽  
Photoredox Catalysis ◽  
Free Dna ◽  
Mediated Electron Transfer

ChemInform Abstract: Electron Transfer Photoredox Catalysis: Intramolecular Radical Addition to Indoles and Pyrroles.

ChemInform ◽  
2010 ◽  
Vol 41 (24) ◽  
pp. no-no
Author(s):  
Joseph W. Tucker ◽  
Jagan M. R. Narayanam ◽  
Scott W. Krabbe ◽  
Corey R. J. Stephenson
Keyword(s):  
Electron Transfer ◽  
Radical Addition ◽  
Photoredox Catalysis

scholarly journals Combining energy and electron transfer in a supramolecular environment for the “green” generation and utilization of hydrated electrons through photoredox catalysis

2016 ◽  
Vol 7 (6) ◽  
pp. 3862-3868 ◽  
Author(s):  
Christoph Kerzig ◽  
Martin Goez
Keyword(s):  
Electron Transfer ◽  
Dipole Moments ◽  
Photoredox Catalysis ◽  
Cross Reactions ◽  
Hydrated Electrons ◽  
Energy And Electron Transfer ◽  
Anionic Micelle

The interaction of an anionic micelle with the molecular charges and dipole moments ensures the desired sequence of processes and suppresses cross reactions in an “all-green” photoredox catalytic access to hydrated electronse˙−aq, which reductively decompose nonactivated chloro-organics.

scholarly journals An overview on disulfide-catalyzed and -cocatalyzed photoreactions

2020 ◽  
Vol 16 ◽  
pp. 1418-1435 ◽  
Author(s):  
Yeersen Patehebieke
Keyword(s):  
Electron Transfer ◽  
Hydrogen Atom ◽  
Recent Progress ◽  
Hydrogen Atom Transfer ◽  
Present Review ◽  
Photoredox Catalysis ◽  
Multiple Bonds ◽  
Thiyl Radicals ◽  
Mild Conditions ◽  
Photocatalytic Reactions

Disulfides are versatile catalysts. They can be photocatalysts, hydrogen atom transfer (HAT) catalysts, cocatalysts, or initiators in photocatalytic reactions. Under photoirradiation, organic disulfides can be easily cleaved into free thiyl radicals (RS•) and can reversibly add to unsaturated multiple bonds to catalyze a variety of functionalization reactions under mild conditions. In photoredox catalysis reactions, an excellent electron transfer ability and excellent radical properties also made these thiyl radicals powerful HAT catalysts. They have increasingly been proven useful in various types of organic photoreactions, such as cyclizations, anti-Markovnikov additions, aromatic olefin carbonylations, isomerizations, etc. They are a class of green, economic, mild, and chemoselective radical catalysts that deserve more attention. The present review highlights the recent progress in the field of disulfide-catalyzed and -cocatalyzed photocatalytic reactions for different reaction types.

scholarly journals Tropane and Related Alkaloid Skeletons via a Radical [3+3]-Annulation Process

2021 ◽  
Author(s):  
Eloïse Colson ◽  
Julie Andrez ◽  
Ali Dabbous ◽  
Frabrice Dénès ◽  
Vincent Maurel ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Radical Cations ◽  
Photoredox Catalysis ◽  
Radical Intermediates ◽  
Transfer Processes ◽  
Radical Acceptor ◽  
Simple Protocol ◽  
Related Alkaloid ◽  
Electron Transfer Processes

A mild and simple protocol for the synthesis of 8-azabicyclo[3.2.1]octane and 9-azabicyclo[3.3.1]nonane derivatives is described. It provides these valuable bicyclic alkaloid skeletons in good yields and high levels of diastereoselectivity from simple and readily available starting materials using visible-light photoredox catalysis. This unprecedented annulation process takes advantage of the unique reactivity of ethyl 2-(acetoxymethyl)acrylate as a 1,3-bis radical acceptor and of cyclic N,N-dialkylanilines as radical 1,3-bis radical donors. The success of this process relies on efficient electron transfer processes and highly selective deprotonation of aminium radical cations leading to the key α-amino radical intermediates.

Enantioselective Photoredox Catalysis Enabled by Proton-Coupled Electron Transfer: Development of an Asymmetric Aza-Pinacol Cyclization

2013 ◽  
Vol 135 (47) ◽  
pp. 17735-17738 ◽  
Author(s):  
Lydia J. Rono ◽  
Hatice G. Yayla ◽  
David Y. Wang ◽  
Michael F. Armstrong ◽  
Robert R. Knowles
Keyword(s):  
Electron Transfer ◽  
Photoredox Catalysis ◽  
Proton Coupled Electron Transfer
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