Results 101 to 110 of about 482,822 (233)

Organopolymer with dual chromophores and fast charge-transfer properties for sustainable photocatalysis

open access: yesNature Communications, 2019
While photoredox catalysis offers a new dimension to chemical synthesis, there are few heterogeneous organocatalysts for metal-free transformations.
Justin D. Smith   +7 more
doaj   +1 more source

Transition metal-free phosphonocarboxylation of alkenes with carbon dioxide via visible-light photoredox catalysis

open access: yesNature Communications, 2019
Phosphonyl and carboxyl groups are valuable functional groups, however their simultaneous incorporation via catalytic difunctionalization of alkenes has not been realized yet.
Qiang Fu   +6 more
doaj   +1 more source

Tandem Photoredox Catalysis: Enabling Carbonylative Amidation of Aryl and Alkylhalides

open access: yes, 2020
Tandem Photoredox Catalysis: Enabling Carbonylative Amidation of Aryl and ...
JA Forni (15767540)   +4 more
core  

Photoredox-Catalyzed and Silane-Mediated Hydrofluoromethylation of Unactivated Alkenes with Fluoroiodomethane in Water

open access: yes, 2023
The first hydrofluoromethylation of unactivated alkenes with fluoroiodomethane and hydrosilanes is developed by merging photoredox catalysis and silane-mediated deiodination processes.
Feng-Ling Qing (1308318)   +9 more
core   +1 more source

Enantioselective benzylic C–H arylation via photoredox and nickel dual catalysis

open access: yesNature Communications, 2019
Chiral 1,1-diaryl alkanes are important targets in pharmaceutical industry. Here, the authors report report a redox-neutral enantioselective benzylic C−H bond arylation via photoredox/nickel dual catalysis accessing chiral 1,1-diarylalkane compounds ...
Xiaokai Cheng, Huangzhe Lu, Zhan Lu
doaj   +1 more source

Regioselective C3-H Trifluoromethylation of 2H-Indazole Under Transition-Metal-Free Photoredox Catalysis [PDF]

open access: yes, 2019
Here we report a visible-light-promoted metal-free regioselective C3-H trifluoromehtylation reaction that proceeds via radical mechanism and which supported by control experiments.
Sharada, Duddu. S   +3 more
core   +1 more source

Visible-Light Photoredox Catalyzed Formation of Triarylethylenes Using a Low-Cost Photosensitizer

open access: yesPhotochem
Visible-light photoredox catalysis using biacetyl (BA) as a low-cost photosensitizer enables the efficient formation of triarylethylenes (TAEs) via a Mizoroki–Heck-type coupling. The reaction proceeds efficiently in acetonitrile upon blue LED irradiation
Daniel Álvarez-Gutiérrez   +4 more
doaj   +1 more source

Conversion of Lignin Models by Photoredox Catalysis

open access: yesChemSusChem, 2018
AbstractOne prominent goal of 21st century research is to develop a sustainable carbon‐neutral biorefinery. Lignin is an important component of lignocellulosic biomass; however, it is currently underutilized owing to its highly cross‐linked, complex, and randomly polymerized composition, which poses a significant challenge to its depolymerization and ...
openaire   +5 more sources

Enantioselective radical conjugate additions driven by a photoactive intramolecular iminium-ion-based EDA complex

open access: yesNature Communications, 2018
In enantioselective catalysis, electron donor–acceptor (EDA) complexes are usually photochemically activated in an intermolecular fashion. Here, the authors report the stereoselective conjugate addition to β-substituted cyclic enones proceeding without ...
Zhong-Yan Cao   +2 more
doaj   +1 more source

Oxyarylation and Aminoarylation of Styrenes Using Photoredox Catalysis

open access: yesOrganic Letters, 2013
A three-component coupling of styrenes is reported, using photoredox catalysis to achieve simultaneous arylation and C-O or C-N bond formation across the styrene double bond.
Fumagalli, Gabriele   +2 more
openaire   +2 more sources

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