Enumerating Active Sites on Metal Nanoparticles: Understanding the Size Dependence of Cobalt Particles for CO Dissociation [0.03%]
计算金属纳米颗粒的活性位：钴纳米粒子解离CO的尺寸效应理解
Michel P C van Etten,Bart Zijlstra,Emiel J M Hensen et al.
Michel P C van Etten et al.
Detailed understanding of structure sensitivity, a central theme in heterogeneous catalysis, is important to guide the synthesis of improved catalysts. Progress is hampered by our inability to accurately enumerate specific active sites on u...
Enantioselective Catalytic Dearomative Addition of Grignard Reagents to 4-Methoxypyridinium Ions [0.03%]
Grignard试剂对4-甲氧基吡啶
Yafei Guo,Marta Castiñeira Reis,Johanan Kootstra et al.
Yafei Guo et al.
We describe a general catalytic methodology for the enantioselective dearomative alkylation of pyridine derivatives with Grignard reagents, allowing direct access to nearly enantiopure chiral dihydro-4-pyridones with yields up to 98%. The m...
Reaction Pathway for Coke-Free Methane Steam Reforming on a Ni/CeO2 Catalyst: Active Sites and the Role of Metal-Support Interactions [0.03%]
无积碳甲烷水蒸气转化反应历程：Ni/CeO₂催化剂的活性中心及其金属-载体相互作用的影响
Agustín Salcedo,Pablo G Lustemberg,Ning Rui et al.
Agustín Salcedo et al.
Methane steam reforming (MSR) plays a key role in the production of syngas and hydrogen from natural gas. The increasing interest in the use of hydrogen for fuel cell applications demands development of catalysts with high activity at reduc...
In Situ Investigation of Charge Performance in Anatase TiO2 Powder for Methane Conversion by Vis-NIR Spectroscopy [0.03%]
用于甲烷转化的金红石型TiO2粉末电荷性能的原位可见-近红外光谱研究
Tina Jingyan Miao,Chao Wang,Lunqiao Xiong et al.
Tina Jingyan Miao et al.
The intrinsic behavior of photogenerated charges and reactions with chemicals are key for a photocatalytic process. To observe these basic steps is of great importance. Here we present a reliable and robust system to monitor these basic ste...
General Pyrrolidine Synthesis via Iridium-Catalyzed Reductive Azomethine Ylide Generation from Tertiary Amides and Lactams [0.03%]
三线性酰胺和内酰胺通过铱催化还原生成氮甲基亚胺盐的吡咯烷合成通用方法
Ken Yamazaki,Pablo Gabriel,Graziano Di Carmine et al.
Ken Yamazaki et al.
An iridium-catalyzed reductive generation of both stabilized and unstabilized azomethine ylides and their application to functionalized pyrrolidine synthesis via [3 + 2] dipolar cycloaddition reactions is described. Proceeding under mild re...
Controlled Periodic Illumination Enhances Hydrogen Production by over 50% on Pt/TiO2 [0.03%]
可控周期光照使Pt/TiO2产氢效率提升超过50%
F Sordello,F Pellegrino,M Prozzi et al.
F Sordello et al.
Efficient solar water photosplitting is plagued by large overpotentials of the HER and OER. Even with a noble metal catalyst, the hydrogen evolution reaction can be limited by the strong M-H bonding over some metals, such as Pt, Pd, and Rh,...
Gold(I)-Catalyzed Synthesis of 3-Sulfenyl Pyrroles and Indoles by a Regioselective Annulation of Alkynyl Thioethers [0.03%]
金(I)催化下通过茋重排构建3-含硫烯基吡咯和吲哚类化合物
Peter E Simm,Prakash Sekar,Jeffery Richardson et al.
Peter E Simm et al.
The combination of nucleophilic nitrenoids and π-acid catalysis has emerged as a powerful tool in heterocycle synthesis. Accessing more varied heterocycle-substitution patterns by maintaining the same reaction pathways across different alk...
Sequential Catalytic Functionalization of Aryltriazenyl Aldehydes for the Synthesis of Complex Benzenes [0.03%]
茋醛的连续催化官能化合成复杂联苯化合物的新方法
Sangwon Seo,Ming Gao,Eva Paffenholz et al.
Sangwon Seo et al.
We demonstrate that aryltriazenes can promote three distinctive types of C-H functionalization reactions, allowing the preparation of complex benzene molecules with diverse substitution patterns. 2-Triazenylbenzaldehydes are shown to be eff...
Strategies for the Catalytic Enantioselective Synthesis of α-Trifluoromethyl Amines [0.03%]
催化合成α-三氟甲基胺的策略研究
Chibueze I Onyeagusi,Steven J Malcolmson
Chibueze I Onyeagusi
The exploitation of the α-trifluoromethylamino group as an amide surrogate in peptidomimetics and drug candidates has been on the rise. In a large number of these cases, this moiety bears stereochemistry with the stereochemical identity ha...
An Unexpected Oxidosqualene Cyclase Active Site Architecture in the Iris tectorum Multifunctional α-Amyrin Synthase [0.03%]
半枝莲多功能α-齐墩果酸合酶氧化角鲨烯环化酶活性中心的非经典结构
Shidan Wu,Fan Zhang,Wenbo Xiong et al.
Shidan Wu et al.
Ordered polycyclization catalyzed by oxidosqualene synthases (OSCs) morph a common linear precursor into structurally complex and diverse triterpene scaffolds with varied bioactivities. We identified three OSCs from Iris tectorum. ItOSC2 is...