Results 51 to 60 of about 229,704 (190)

Advancing Organic Photoredox Catalysis: Mechanistic Insight through Time-Resolved Spectroscopy [PDF]

open access: yes
The rapid development of light-activated organic photoredox catalysts has led to the proliferation of powerful synthetic chemical strategies with industrial and pharmaceutical applications.
Vanessa, Huxter
core   +1 more source

Developing Organometallic Nucleophilic Reagents Via Photoredox Catalysis [PDF]

open access: yes, 2023
The addition of organometallic reagents to the carbonyl group represents a key transformation, both in academia and industry. Most of these transformations rely on a mechanism in which accessible and reactive halides are transformed into the ...
Cozzi P. G.   +4 more
core   +1 more source

Recent developments in photoredox-catalyzed remote ortho and para C–H bond functionalizations

open access: yesBeilstein Journal of Organic Chemistry, 2020
In recent years, the research area of direct C–H bond functionalizations was growing exponentially not only due to the ubiquity of inert C–H bonds in diverse organic compounds, including bioactive natural and nonnatural products, but also due to its ...
Rafia Siddiqui, Rashid Ali
doaj   +1 more source

Photoredox Catalysis in Organic Chemistry

open access: yesThe Journal of Organic Chemistry, 2016
In recent years, photoredox catalysis has come to the forefront in organic chemistry as a powerful strategy for the activation of small molecules. In a general sense, these approaches rely on the ability of metal complexes and organic dyes to convert visible light into chemical energy by engaging in single-electron transfer with organic substrates ...
Shaw, Megan H.   +2 more
openaire   +2 more sources

Visible-light photoredox catalysis with organic polymers

open access: yes, 2023
The development of photocatalysts to drive organic reactions is a frontier research topic. Organic polymers can be well tuned in terms of structural and photophysical properties and, therefore, constitute a promising class of photocatalysts in photoredox
Haining Tian   +7 more
core   +1 more source

Silane- and peroxide-free hydrogen atom transfer hydrogenation using ascorbic acid and cobalt-photoredox dual catalysis

open access: yesNature Communications, 2021
Hydrogen atom transfer (HAT) hydrogenation of alkenes usually requires stoichiometric silanes and peroxides. Here, the authors report a silane- and peroxide-free HAT hydrogenation method using a combined cobalt/photoredox catalysis and vitamin C as a ...
Yuji Kamei   +6 more
doaj   +1 more source

Excited Organic Radicals in Photoredox Catalysis. [PDF]

open access: yesJACS Au
Many important synthetic-oriented works have proposed excited organic radicals as photoactive species, yet mechanistic studies raised doubts about whether they can truly function as photocatalysts. This skepticism originates from the formation of (photo)redox-active degradation products and the picosecond decay of electronically excited radicals, which
Pfund B, Wenger OS.
europepmc   +4 more sources

Ru-Photoredox-Catalyzed Decarboxylative Oxygenation of Aliphatic Carboxylic Acids through N‑(acyloxy)phthalimide

open access: yes, 2018
Decarboxylative aminoxylation of aliphatic carboxylic acid derivatives with (2,2,6,6-tetramethylpiperidin-1-yl)­oxyl (TEMPO) in the presence of ruthenium photoredox catalysis is reported.
Zhen Chen (129176)   +5 more
core   +1 more source

Targeted photoredox catalysis in cancer cells [PDF]

open access: yesNature Chemistry, 2019
Hypoxic tumours are a major problem for cancer photodynamic therapy. Here, we show that photoredox catalysis can provide an oxygen-independent mechanism of action to combat this problem. We have designed a highly oxidative Ir(III) photocatalyst, [Ir(ttpy)(pq)CI]PF6 ([1]PF6, where 'ttpy' represents 4'-(p-tolyl)-2,2':6',2 ''-terpyridine and 'pq ...
Huang, Huaiyi   +12 more
openaire   +5 more sources

Photoredox catalytic radical fluorosulfonylation of olefins enabled by a bench-stable redox-active fluorosulfonyl radical precursor

open access: yesNature Communications, 2022
Sulfonyl fluorides are compounds with potential application in chemical biology and drug discovery, but their preparation can be challenging. Here, the authors present a type of bench-stable fluorosulfonyl radical reagents that enable radical ...
Peng Wang   +4 more
doaj   +1 more source

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