scholarly journals Intermolecular oxyarylation of olefins with aryl halides and TEMPOH catalyzed by the phenolate anion under visible light

2020 ◽  
Vol 11 (27) ◽  
pp. 6996-7002
Author(s):  
Kangjiang Liang ◽  
Qian Liu ◽  
Lei Shen ◽  
Xipan Li ◽  
Delian Wei ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Aryl Halides ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Strong Reduction ◽  
Aryl Radicals ◽  
Reduction Potentials

The phenolate anion was developed as a new photocatalyst with strong reduction potentials (−3.16 V vs. SCE) to reduction of aryl halides to aryl radicals through single electron transfer.

scholarly journals Alcohol-Initiated Dediazoniation of Aryldiazonium Ions to Aryl Radicals: A Simple and Efficient Route to Arylboronates

2018 ◽  
Vol 42 (9) ◽  
pp. 481-485
Author(s):  
Xiulian Zhang ◽  
Zhicheng Zhang ◽  
Yongbin Xie ◽  
Yujie Jiang ◽  
Ruibo Xu ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Bond Formation ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Aryl Radical ◽  
Radical Species ◽  
Aryl Radicals ◽  
Efficient Access ◽  
Efficient Route ◽  
Operational Simplicity

A simple and efficient access to arylboronates was achieved with methanol-initiated borylation of aryldiazonium salts. Reduction of aryldiazonium ions by single electron transfer from methanol affords aryl radical species, which undergo a subsequent C–B bond formation with bis(pinacolato)diboron. This highly practical borylation process, which can be carried out on the gram-scale, enjoys operational simplicity as well as mild and catalyst-free conditions.

scholarly journals Recent application of visible-light induced radicals in C–S bond formation

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 20046-20056 ◽  
Author(s):  
Vishal Srivastava ◽  
Pravin K. Singh ◽  
Arjita Srivastava ◽  
Praveen P. Singh
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Organic Compounds ◽  
High Efficiency ◽  
Bond Formation ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Recent Application

The sulphur centered radicals, produced from various organic compounds, in high efficiency by single-electron-transfer (SET) oxidation.

Visible Light-Promoted Photocatalytic C-5 Carboxylation of 8-Aminoquinoline Amides and Sulfonamides via a Single Electron Transfer Pathway

2019 ◽  
Vol 84 (16) ◽  
pp. 9869-9896 ◽  
Author(s):  
Chiranjit Sen ◽  
Tapan Sahoo ◽  
Harshvardhan Singh ◽  
Eringathodi Suresh ◽  
Subhash Chandra Ghosh
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Electron Transfer Pathway

Visible-light-induced phenylchalcogenyl-oxygenation of allenes having aryl or electron withdrawing substituents with ambient air as a sole oxidant

2016 ◽  
Vol 14 (48) ◽  
pp. 11415-11425 ◽  
Author(s):  
Gullapalli Kumaraswamy ◽  
Swargam Vijaykumar ◽  
Kukkadapu Ankamma ◽  
Vykunthapu Narayanarao
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Transfer Process ◽  
Stereoselective Synthesis ◽  
Ambient Air ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Electron Transfer Process ◽  
Electron Withdrawing Substituents

The stereoselective synthesis of α-phenylselenyl- or telluryl β-aryl acrylaldehydes/ketones from aryl allenes/1,3-diarylallene by an oxidative photo-induced single electron transfer process using benign ambient air as a sole oxidant was achieved.

Reaction of Thianthrene Cation Radical with Diarylmercurials. Search for Single Electron Transfer Is Elusive

1993 ◽  
Vol 58 (1) ◽  
pp. 82-88 ◽  
Author(s):  
A. K. M. M. Hoque ◽  
Henry J. Shine ◽  
T. Krishnan Venkatachalam
Keyword(s):  
Electron Transfer ◽  
Cation Radical ◽  
Product Formation ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Aryl Radicals ◽  
Stoichiometric Ratios

Diarylmercurials (Ar2Hg) with Ar = p-tolyl Ib, o-tolyl Ic, p-anisyl Id and 2-allyloxy-4,5-dimethylphenyl Ie, reacted with thianthrene cation radical perchlorate (Th.+ClO4-) in two stoichiometric ratios: 2 : 1 and 4 : 1 (Th.+ClO4-/Ar2Hg). In the 2 : 1 ratio the products were the 5-arylthianthreniumyl perchlorates IIb - IIe, thianthrene (Th) and ArHg+ClO4- (assayed as ArHgCl, III) in quantitative yields. In the 4 : 1 ratio reaction with ArHg+ occurred, too, and the products were IIb - IIe, Th, the complex Th3Hg(ClO4)2 and HgO (after workup). In contrast, Ph2Hg (Ia) did not react beyond the 2 : 1 stoichiometry. In the reactions with Ie, no evidence for formation and cyclization of free 2-allyloxy-4,5-dimethylphenyl radical was found. Reaction of and product formation from these arylmercurials, therefore, does not occur in single electron transfer steps that lead to free aryl radicals. Instead electron transfer appears to occur within a complex of Ar2Hg with Th.+ from which II and other products are subsequently formed.

scholarly journals Single electron transfer-based peptide/protein bioconjugations driven by biocompatible energy input

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Yue Weng ◽  
Chunlan Song ◽  
Chien-Wei Chiang ◽  
Aiwen Lei
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Energy Input ◽  
Limited Range ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Electrochemical Catalysis ◽  
Future Developments ◽  
Recent Developments ◽  
Modified Peptides

AbstractBioconjugation reactions play a central facilitating role in engendering modified peptides and proteins. Early progress in this area was inhibited by challenges such as the limited range of substrates and the relatively poor biocompatibility of bioconjugation reagents. However, the recent developments in visible-light induced photoredox catalysis and electrochemical catalysis reactions have permitted significant novel reactivities to be developed in the field of synthetic and bioconjugation chemistry. This perspective describes recent advances in the use of biocompatible energy input for the modification of peptides and proteins mainly, via the single electron transfer (SET) process, as well as key future developments in this area.

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