Results 61 to 70 of about 43,763 (313)

Nickel‐Photocatalytic Decarboxylative Oxidation

ChemPhotoChem
Selective oxidation of α‐hydroxy acids, particularly mandelic acids, is achieved by merging nickel and photoredox catalysis. This approach enables the discrete formation of aldehydes and ketones without observable overoxidation. By decoupling the decarboxylation and alcohol oxidation steps, the reaction proceeds under free‐radical conditions with high ...
Ning Wei, Sebastian B. Beil
openaire   +1 more source

Electrosynthesis of Bioactive Chemicals, From Ions to Pharmaceuticals

Advanced Functional Materials, EarlyView.
This review discusses recent advances in electrosynthesis for biomedical and pharmaceutical applications. It covers key electrochemical materials enabling precise delivery of ions and small molecules for cellular modulation and disease treatment, alongside catalytic systems for pharmaceutical synthesis.
Gwangbin Lee, Sojin Kim, Myeongeun Lee, Kyoungsuk Jin, Jimin Park   +4 more
wiley   +1 more source

Radical Electroprecipitation from a Water|Oil|Electrode Interface Prolongs “Electro”Chemiluminescence of the Tris(2,2′‐bipyridyl)Ruthenium(II) and Benzoyl Peroxide System by 103

Angewandte Chemie, EarlyView.
Multiphase systems, including ones with liquid‐liquid phase boundaries, are the home to many curious chemistries including reaction acceleration and spontaneous formation of reactive species. Here we show the liquid‐liquid interface causes electrochemiluminescence and afterglow chemiluminescence lifetime to be enhanced by 220,000% in‐time, far beyond ...
Daniel M. Carrel, Brady R. Layman, Megan L. Hill, Jeffrey E. Dick   +3 more
wiley   +2 more sources

Chirale Synthesebausteine aus Aminosäuren: Dihydrothiazol-Derivate (Δ4-Thiazoline) aus Cystein

CHIMIA, 1989
Reaction of cysteine with pivalaldehyde and protection at the nitrogen atom with benzyl chloroformate give the diastereomerically pure cyclic N,S-acetal 2 which is selectively oxidized to the sulfoxide 3.
Dieter Seebach, André Jeanguenat, Jürgen Schmidt, Thomas Maetzke   +3 more
doaj   +1 more source

IDH Mutation Analysis in Ewing Sarcoma Family Tumors [PDF]

Journal of Pathology and Translational Medicine, 2015
Background: Isocitrate dehydrogenase (IDH) catalyzes the oxidative decarboxylation of isocitrate to yield α-ketoglutarate (α-KG) with production of reduced nicotinamide adenine dinucleotide (NADH).
Ki Yong Na, Byeong-Joo Noh, Ji-Youn Sung, Youn Wha Kim, Eduardo Santini Araujo, Yong-Koo Park   +5 more
doaj   +1 more source

Fragmentation of a dioxolanyl radical via nonstatistical reaction dynamics: characterization of the vinyloxy radical by ns time-resolved laser flash photolysis [PDF]

, 2018
The photochemistry of two Barton esters, one derived from a dioxolane carboxylic acid and the other from pivalic acid, was investigated by product analysis and nanosecond laser flash photolysis (LFP).
Bucher, Götz, Lal, Mukul, Rana, Anup, Schmittel, Michael   +3 more
core   +1 more source

Enhancing and Stabilizing Hydrogen Catalysis Through [NiFe]‐Hydrogenase Immobilization Within Macroporous Covalent Organic Frameworks

Advanced Functional Materials, EarlyView.
[NiFe]‐hydrogenases efficiently catalyze hydrogen conversion, but their instability limits biotechnological applications. Here it is shown that encapsulating hydrogenase into hierarchical COFs with macro‐ and micropores and functionalized with sulfonic or carboxylic acid groups improves enzyme stability and electron transfer to electrodes.
Islam E. Khalil, Armel F. Tadjoung Waffo, Prasenjit Das, Sagie Katz, Sandra Kunow, Christian Lorent, Yasmine Ziouani, Warisha Tahir, Augustine A. Owusu, Oliver Lenz, Ingo Zebger, Stefan Frielingsdorf, Arne Thomas   +12 more
wiley   +1 more source

Dispersion‐Enhanced Nitrogen‐Centered Photocatalysis of the Direct Hydrogen Atom Transfer

Angewandte Chemie, EarlyView.
Nitrogen‐centered acridine photocatalysts for direct hydrogen atom transfer have been developed, leveraging dispersion interactions to enhance photocatalytic activity. This approach enables diverse functionalization reactions of strong C─H bonds even under cryogenic conditions and provides a new strategy for boosting the efficiency of direct HAT ...
Jiasong Zhang, Kaitong Zhuang, Ramon Trevino, Babu Raj Dhungana, Huiying Sun, Shuyu Yin, Yuting Li, Jacob A. Sanchez, Xiaoyu Xia, Ramy Elerian, Yao Sun, Seth O. Fremin, Chao Huang, Min He, Maosheng Cheng, Oleg V. Larionov, Shengfei Jin   +16 more
wiley   +2 more sources

Insight into the degradation mechanism of fluorene by ferrous/humic acid activated persulfate: Free radical reactions, functional group verification and degradation pathway

Frontiers in Environmental Science, 2022
This study evaluated the performance of humic acid (HA)/ferrous ion (Fe (II)) activating persulfate (PS) for fluorene (FLU) degradation. Results showed that HA/Fe(II)/PS system exhibited the best performance for PS activation to eliminate FLU.
Haonan Li, Haonan Li, Haonan Li, Xiaoyong Liao, Xiaoyong Liao, You Li, You Li, Qiongzhi Liu, Qiongzhi Liu, Qiongzhi Liu, Junpeng Luo, Junpeng Luo, Junpeng Luo   +12 more
doaj   +1 more source

Enzymatic functionalization of carbon-hydrogen bonds [PDF]

, 2011
The development of new catalytic methods to functionalize carbon–hydrogen (C–H) bonds continues to progress at a rapid pace due to the significant economic and environmental benefits of these transformations over traditional synthetic methods.
Arnold, Frances H., Coelho, Pedro S., Lewis, Jared C.   +2 more
core   +1 more source