Benzoquinone Cocatalyst Contributions to DAF/Pd(OAc)2-Catalyzed Aerobic Allylic Acetoxylation in the Absence and Presence of a Co(salophen) Cocatalyst [0.03%]
无钴和含钴(salophen)助催化剂下DAF/Pd(OAc)₂催化氧气氧化 allyl 醇反应的苯醌型助催化剂的作用研究
Caitlin V Kozack,Stephen J Tereniak,Jonathan N Jaworski et al.
Caitlin V Kozack et al.
Palladium(II)-catalyzed allylic acetoxylation has been the focus of extensive development and investigation. Methods that use molecular oxygen (O2) as the terminal oxidant typically benefit from the use of benzoquinone (BQ) and a transition...
Mapping and Exploiting the Promiscuity of OxyB toward the Biocatalytic Production of Vancomycin Aglycone Variants [0.03%]
oxyb 的多面性映射及其在生物催化生产万古霉素糖苷变异体中的应用
Clarissa C Forneris,Andy K L Nguy,Mohammad R Seyedsayamdost
Clarissa C Forneris
Vancomycin is one of the most important clinical antibiotics in the fight against infectious disease. Its biological activity relies on three aromatic cross-links, which create a cup-shaped topology and allow tight binding to nascent peptid...
Local Electric Fields as a Natural Switch of Heme-Iron Protein Reactivity [0.03%]
局部电场作为血红素铁蛋白反应性的自然开关
Daniel Bím,Anastassia N Alexandrova
Daniel Bím
Heme-iron oxidoreductases operating through the high-valent FeIVO intermediates perform crucial and complicated transformations, such as oxidations of unreactive saturated hydrocarbons. These enzymes share the same Fe coordination, only dif...
Structure Determination of Boron-Based Oxidative Dehydrogenation Heterogeneous Catalysts with Ultra-High Field 35.2 T 11B Solid-State NMR Spectroscopy [0.03%]
超高场35.2T固体NMR光谱确定硼基氧化脱氢多相催化剂的结构
Rick W Dorn,Melissa C Cendejas,Kuizhi Chen et al.
Rick W Dorn et al.
Boron-based heterogenous catalysts, such as hexagonal boron nitride (h-BN) as well as supported boron oxides, are highly selective catalysts for the oxidative dehydrogenation (ODH) of light alkanes to olefins. Previous catalytic measurement...
Single-Particle Catalysis: Revealing Intraparticle Pacemakers in Catalytic H2 Oxidation on Rh [0.03%]
单个粒子催化：Rh催化剂上H2氧化反应的内部活性中心及其作用机制研究
Johannes Zeininger,Yuri Suchorski,Maximilian Raab et al.
Johannes Zeininger et al.
Self-sustained oscillations in H2 oxidation on a Rh nanotip mimicking a single catalytic nanoparticle were studied by in situ field emission microscopy (FEM). The observed spatio-temporal oscillations result from the coupling of subsurface ...
Synergistic Catalysis of Tandem Michael Addition/Enantioselective Protonation Reactions by an Artificial Enzyme [0.03%]
人工酶催化的迈克尔加成/对映选择性质子化串联反应的协同催化作用研究
Zhi Zhou,Gerard Roelfes
Zhi Zhou
Enantioselective protonation is conceptually one of the most attractive methods to generate an α-chiral center. However, enantioselective protonation presents major challenges, especially in water. Herein, we report a tandem Michael additi...
Conversion of Polyethylene Waste into Gaseous Hydrocarbons via Integrated Tandem Chemical-Photo/Electrocatalytic Processes [0.03%]
基于联合化学-光/电催化体系的聚乙烯废塑料高效转化为轻质烃气体燃料研究
Christian M Pichler,Subhajit Bhattacharjee,Motiar Rahaman et al.
Christian M Pichler et al.
The chemical inertness of polyethylene makes chemical recycling challenging and motivates the development of new catalytic innovations to mitigate polymer waste. Current chemical recycling methods yield a complex mixture of liquid products,...
Side Chain Conformation Restriction in the Catalysis of Glycosidic Bond Formation by Leloir Glycosyltransferases, Glycoside Phosphorylases, and Transglycosidases [0.03%]
Leloir糖基转移酶、糖基磷酸酶和转糖基酶催化糖苷键形成的侧链构象限制
Jonathan C K Quirke,David Crich
Jonathan C K Quirke
Carbohydrate side chain conformation is an important factor in the control of reactivity at the anomeric center, ie, in the making and breaking of glycosidic bonds, whether chemically or, for hydrolysis, by glycoside hydrolases. In nature g...
Kelly A McDaniel,Anna R Blood,Gavin C Smith et al.
Kelly A McDaniel et al.
The dearomative cyclization of linear amides to complex spirocyclic butyrolactams has been enabled by photoredox catalysis through a reductive radical-polar crossover mechanism. This mechanism operates with precision on unactivated aromatic...
Copper-Catalyzed Decarboxylative Functionalization of Conjugated β,γ-Unsaturated Carboxylic Acids [0.03%]
共轭不饱和羧酸的脱羧官能团化反应研究——铜催化β，γ-不饱和羧酸的脱羧官能团化反应
Wei Zhang,Chengming Wang,Qiu Wang
Wei Zhang
Copper-catalyzed decarboxylative coupling reactions of conjugated β,γ-unsaturated carboxylic acids have been achieved for allylic amination, alkylation, sulfonylation, and phosphinoylation. This approach was effective for a broad scope of...