Results 41 to 50 of about 4,438 (202)

N-Arylphenothiazines as strong donors for photoredox catalysis – pushing the frontiers of nucleophilic addition of alcohols to alkenes

Beilstein Journal of Organic Chemistry, 2019
A new range of N-phenylphenothiazine derivatives was synthesized as potential photoredox catalysts to broaden the substrate scope for the nucleophilic addition of methanol to styrenes through photoredox catalysis.
Fabienne Speck, David Rombach, Hans-Achim Wagenknecht   +2 more
doaj   +1 more source

Targeted photoredox catalysis in cancer cells [PDF]

Nature 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)Cl]PF6 ([1]PF6, where 'ttpy' represents 4'-(p-tolyl)-2,2':6',2''-terpyridine and 'pq ...
Huang, Huaiyi, Banerjee, Samya, Qiu, Kangqiang, Zhang, Pingyu, Blacque, Olivier, Malcomson, Thomas, Paterson, Martin J, Clarkson, Guy J, Staniforth, Michael, Stavros, Vasilios G, Gasser, Gilles, Chao, Hui, Sadler, Peter J   +12 more
openaire   +4 more sources

Visible-Light Photoredox Catalysis in Water

The Journal of Organic Chemistry, 2022
The use of water in organic synthesis draws attention to its green chemistry features and its unique ability to unveil unconventional reactivities. Herein, literature about the use of water as a reaction medium under visible-light photocatalytic conditions is summarized in order to highlight challenges and opportunities.
Camilla Russo, Francesca Brunelli, Gian Cesare Tron, Mariateresa Giustiniano   +3 more
openaire   +4 more sources

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

Beilstein 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

Unravelling the Atomic Structure of a Metal‐Covalent Organic Framework Assembled from Ruthenium Metalloligands

Advanced Materials, Volume 37, Issue 13, April 2, 2025.
Metal‐covalent organic frameworks (MCOFs) are novel porous materials that exhibit the advantages of covalent and metal‐organic frameworks. However, it is extremely difficult to resolve their atomic structure and better understand their structure‐properties relation. This work utilizes a synergistic combination of advanced microscopy, spectroscopic, and
Seán Hennessey, Roberto González‐Gómez, Nicolás Arisnabarreta, Anna Ciotti, Jing Hou, Nadezda V. Tarakina, Andrey Bezrukov, Kunal S. Mali, Michael Zaworotko, Steven De Feyter, Max García‐Melchor, Pau Farràs   +11 more
wiley   +1 more source

Photoredox Catalysis in Organic Chemistry

The 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., Twilton, Jack, MacMillan, David W. C.   +2 more
openaire   +2 more sources

Atomic Tuning of Metal‐Support Interactions for Pathway‐Selective CO2 Photoreduction on TiO2

Advanced Science, EarlyView.
Single‐atom Fe and Cu catalysts anchored on TiO2 steer photocatalytic CO2 reduction toward distinct pathways. Fe sites favor rapid *CO desorption and selective CO formation, whereas Cu sites stabilize *CHO intermediates, enabling deep reduction and C─C coupling. Combined spectroscopy and DFT calculations reveal how metal–support interactions and oxygen
Dongyun Kim, Wonjae Ko, Byoung‐Hoon Lee, Sanghoon Kim, Yun Do Kim, Hyunsoo Ahn, Yoon Jung, Chan Woo Lee, Kug‐Seung Lee, Eunhee Gong, Junho Lee, Minho Kim, Taeghwan Hyeon, Su‐Il In   +13 more
wiley   +1 more source

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

Nature 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, Honghai Zhang, Xingliang Nie, Tianxiao Xu, Saihu Liao   +4 more
doaj   +1 more source

Decarboxylative Peptide Macrocyclization through Photoredox Catalysis [PDF]

Angewandte Chemie International Edition, 2016
Abstract A method for the decarboxylative macrocyclization of peptides bearing N‐terminal Michael acceptors has been developed. This synthetic method enables the efficient synthesis of cyclic peptides containing γ‐amino acids and is tolerant of functionalities present in both natural and non‐proteinogenic amino acids.
Stefan J, McCarver, Jennifer X, Qiao, Joseph, Carpenter, Robert M, Borzilleri, Michael A, Poss, Martin D, Eastgate, Michael M, Miller, David W C, MacMillan   +7 more
openaire   +2 more sources

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

Nature 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, Yusuke Seino, Yuto Yamaguchi, Tatsuhiko Yoshino, Satoshi Maeda, Masahiro Kojima, Shigeki Matsunaga   +6 more
doaj   +1 more source