Results 31 to 40 of about 482,822 (233)

Hydroxyl-Diazomethylation of Alkenes via Photoredox Catalysis [PDF]

, 2023
α-Diazoesters belong to significantly important carbenoid precursors in synthetic chemistry, diazomethylation-based difunctionalization of alkenes is highly valuable but remain nontrivial. Herein, we reported a general and modular approach for the direct
Haisheng, Xie, Xiaochan , Zheng, Shaoyong , Chen, Wei, Zeng, Junshan, Liu, Huanfeng , Jiang, Ying, Zeng, Zhongfeng, Luo   +7 more
core   +1 more source

Spin-Forbidden Excitation Enables Infrared Photoredox Catalysis [PDF]

, 2020
We describe a new family of catalysts that undergo direct ground state singlet to excited state triplet excitation with IR light, leading to photoredox catalysis without the energy waste associated with intersystem crossing.
Martin, Eastgate, Yichen, Tan, Melda, Sezen-Edmonds, Jacob M., Janey, Nicholas E. S., Tay, Benjamin D., Ravetz, Candice, Joe, Tomislav, Rovis, Michael A., Schmidt   +8 more
core   +2 more sources

Biofilm heterogeneity-adaptive photoredox catalysis enables red light-triggered nitric oxide release for combating drug-resistant infections

Nature Communications, 2023
The formation of biofilms is closely associated with persistent and chronic infections, and physiological heterogeneity such as pH and oxygen gradients renders biofilms highly resistant to conventional antibiotics.
Jian Cheng, Gui-Hai Gan, Shaoqiu Zheng, Guo-Ying Zhang, Chen Zhu, Shi-Yong Liu, Jin-Ming Hu   +6 more
semanticscholar   +1 more source

RECENTES APLICAÇÕES EM SÍNTESE ORGÂNICA DE CATÁLISE FOTO REDOX MEDIADA POR LUZ VISÍVEL

Química Nova, 2015
In the past few years, photoredox catalysis has become a powerful tool in the field of organic synthesis. Using this efficient method, it is possible to excite organic compounds from visible light and attain alternative mechanistic pathways for the ...
Angelina M. de Almeida, Mauro V. de Almeida, Giovanni W. Amarante   +2 more
doaj   +1 more source

Visible Light Photoredox Catalysis with Transition Metal Complexes: Applications in Organic Synthesis

Chemical Reviews, 2013
A fundamental aim in the field of catalysis is the development of new modes of small molecule activation. One approach toward the catalytic activation of organic molecules that has received much attention recently is visible light photoredox catalysis ...
Christopher K. Prier, D. A. Rankic, D. W. C. MacMillan   +2 more
semanticscholar   +1 more source

Exploiting the Marcus inverted region for first-row transition metal–based photoredox catalysis

Science, 2023
Second- and third-row transition metal complexes are widely employed in photocatalysis, whereas earth-abundant first-row transition metals have found only limited use because of the prohibitively fast decay of their excited states.
Amy Y Chan, Atanu Ghosh, Jonathan T. Yarranton, Jack Twilton, Jian Jin, Daniela M. Arias-Rotondo, H. Sakai, J. McCusker, David W. C. MacMillan   +8 more
semanticscholar   +1 more source

Formation and degradation of strongly reducing cyanoarene-based radical anions towards efficient radical anion-mediated photoredox catalysis

Nature Communications, 2023
Cyanoarene-based photocatalysts are widely used due to their catalytic performance, but the formation of the active species and its potential degradation pathways are poorly understood.
Yonghwan Kwon, Jungwook Lee, Yeon-Seo Noh, Doyon Kim, Yungyeong Lee, Changhoon Yu, J. C. Roldao, Si-Yang Feng, J. Gierschner, R. Wannemacher, M. Kwon   +10 more
semanticscholar   +1 more source

Functionalized Polyamine Synthesis with Photoredox Catalysis

Chemistry – A European Journal, 2023
Abstract Polyamines, such as putrescine and spermidine, are pivotal in various biological processes across living organisms. Despite their significance, structurally modified polyamines offer a less‐explored avenue for discovering bioactive compounds. The limitation is attributed to the synthetic difficulty of accessing functionalized
Yuta Makihara, Bumpei Maeda, Ryohei Akiyoshi, Daisuke Tanaka, Kei Murakami   +4 more
openaire   +2 more sources

Advances in asymmetric organocatalysis over the last 10 years

Nature Communications, 2020
Organocatalysis has become a major pillar of (asymmetric) catalysis. Here, the authors discuss recent trends in organocatalytic activation modes for challenging stereoselective transformations and the emerging integration with other fields, such as ...
Shao-Hua Xiang, Bin Tan
doaj   +1 more source

Activation of Alkyl Chlorides Enabled by Zirconocene and Photoredox Catalysis [PDF]

, 2022
C–Cl bond cleavage of unactivated alkyl chlorides with zirconocene and photoredox catalysis has been achieved. The present protocol exhibited a broader scope of alkyl chlorides compared to the preceding methods with titanocene. This scope expansion could
Keisuke, Tanaka, Eisuke, Ota, Junichiro, Yamaguchi, Toshimasa, Okita, Kazuhiro, Aida, Keisuke Tanaka, Junichiro Yamaguchi, Kazuhiro Aida, Toshimasa Okita, Eisuke Ota   +9 more
core   +2 more sources