Accessing (Multi)Fluorinated Piperidines Using Heterogeneous Hydrogenation [0.03%]
使用多相氢化方法获得含氟哌啶类化合物
Tobias Wagener,Arne Heusler,Zackaria Nairoukh et al.
Tobias Wagener et al.
Fluorinated piperidines are desirable motifs for pharmaceutical and agrochemical research. Nevertheless, general synthetic access remains out of reach. Herein, we describe a simple and robust cis-selective hydrogenation of abundant and chea...
Investigation of the Deactivation and Reactivation Mechanism of a Heterogeneous Palladium(II) Catalyst in the Cycloisomerization of Acetylenic Acids by In Situ XAS [0.03%]
原位X射线吸收光谱研究钯(II)多相催化剂在炔酸环异构化反应中的失活与再生机制
Ning Yuan,Arnar Gudmundsson,Karl P J Gustafson et al.
Ning Yuan et al.
A well-studied heterogeneous palladium(II) catalyst used for the cycloisomerization of acetylenic acids is known to be susceptible to deactivation through reduction. To gain a deeper understanding of this deactivation process and to enable ...
Electrochemical Activation of Atomic Layer-Deposited Cobalt Phosphate Electrocatalysts for Water Oxidation [0.03%]
用于水分解阳极氧化反应的原子层沉积钴磷酸盐电催化剂的电化学激活作用
Ruoyu Zhang,Gerben van Straaten,Valerio di Palma et al.
Ruoyu Zhang et al.
The development of efficient and stable earth-abundant water oxidation catalysts is vital for economically feasible water-splitting systems. Cobalt phosphate (CoPi)-based catalysts belong to the relevant class of nonprecious electrocatalyst...
Hybrid Chemo-, Bio-, and Electrocatalysis for Atom-Efficient Deuteration of Cofactors in Heavy Water [0.03%]
氘代水中原子经济性高的辅因子化学生物电合成法
Jack S Rowbotham,Holly A Reeve,Kylie A Vincent
Jack S Rowbotham
Deuterium-labeled nicotinamide cofactors such as [4-2H]-NADH can be used as mechanistic probes in biological redox processes and offer a route to the synthesis of selectively [2H] labeled chemicals via biocatalytic reductive deuteration. At...
Control and Impact of Metal Loading Heterogeneities at the Nanoscale on the Performance of Pt/Zeolite Y Catalysts for Alkane Hydroconversion [0.03%]
纳米尺度金属负载异质性对Pt/丝光沸石烷烃氢解催化剂性能的控制和影响研究
Lars I van der Wal,Jogchum Oenema,Luc C J Smulders et al.
Lars I van der Wal et al.
The preparation of zeolite-based bifunctional catalysts with low noble metal loadings while maintaining optimal performance has been studied. We have deposited 0.03 to 1.0 wt % Pt on zeolite H-USY (Si/Al ∼ 30 at./at.) using either platinum...
How the Destabilization of a Reaction Intermediate Affects Enzymatic Efficiency: The Case of Human Transketolase [0.03%]
反应中间体的去稳定化对酶效率的影响：以人脱酮酶为例
Mario Prejanò,Fabiola E Medina,Maria J Ramos et al.
Mario Prejanò et al.
Atomic resolution X-ray crystallography has shown that an intermediate (the X5P-ThDP adduct) of the catalytic cycle of transketolase (TK) displays a significant, putatively highly energetic, out-of-plane distortion in a sp 2 carbon adjacent...
Stereoconvergent Conjugate Addition of Arylboronic Acids to α- Angelica Lactone Derivatives: Synthesis of Stereochemically Complex γ- Butyrolactones [0.03%]
芳基硼酸与当药内酯衍生物的立体汇聚型共轭加成反应：立体化学复杂的γ-丁内酯合成
Jessica A Griswold,Jeffrey S Johnson
Jessica A Griswold
Catalyzed stereoconvergent 1,4-additions to unsaturated carbonyls are rare but of high potential value. This letter details the development of enantioselective arylation reactions of boronic acids and β,γ-butenolides. These reactions are ...
On the Cobalt Carbide Formation in a Co/TiO2 Fischer-Tropsch Synthesis Catalyst as Studied by High-Pressure, Long-Term Operando X-ray Absorption and Diffraction [0.03%]
基于高压长时间原位X射线吸收和衍射研究的钴基费托合成催化剂中氯化钴的形成
Ilse K van Ravenhorst,Adam S Hoffman,Charlotte Vogt et al.
Ilse K van Ravenhorst et al.
Operando X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) were performed on a Co/TiO2 Fischer-Tropsch synthesis (FTS) catalyst at 16 bar for (at least) 48 h time-on-stream in both a synchrotron facility and a laboratory-based...
Enhancing the Catalytic Activity of Palladium Nanoparticles via Sandwich-Like Confinement by Thin Titanate Nanosheets [0.03%]
通过 titanate 纳米片的夹心限域效应增强 Pd 纳米粒子的催化性能
Kevin Ament,Daniel R Wagner,Thomas Götsch et al.
Kevin Ament et al.
As atomically thin oxide layers deposited on flat (noble) metal surfaces have been proven to have a significant influence on the electronic structure and thus the catalytic activity of the metal, we sought to mimic this architecture at the ...
Electrocatalytic Water Oxidation with α-[Fe(mcp)(OTf)2] and Analogues [0.03%]
α-[Fe(mcp)(OTf)2]及类似物的电催化水分解反应
Silvia D&#x;Agostini,Konstantin G Kottrup,Carla Casadevall et al.
Silvia D&#x;Agostini et al.
The complex α-[Fe(mcp)(OTf)2] (mcp = N,N'-dimethyl-N,N'-bis(pyridin-2-ylmethyl)-cyclohexane-1,2-diamine and OTf = trifluoromethanesulfonate anion) was reported in 2011 by some of us as an active water oxidation (WO) catalyst in the presenc...