Photodimerization of norbornenes and cyclohexenes catalyzed by Cu(I) complexes: mechanistic similarities and differences [0.03%]
铜(I)配合物催化norbornene和cyclohexene的光二聚反应：机理异同点分析
Xin-Xin Liu,Jia-Jia Ma,Guo Li et al.
Xin-Xin Liu et al.
The Cu(I)-photocatalyzed cycloaddition reaction has become an important way to construct four-membered ring products. A recent experiment reported the photocycloaddition of norbornenes (nb) and cyclohexenes (ch) catalyzed by CuOTf. However,...
Proposal of a reaction mechanism for the thermal carbonation of ethylene oxide by CO2 in ionic liquids [0.03%]
离子液体中环氧乙烷二氧化碳热加合反应机理的研究
José Muñoz-Espinoza,Carlos Cárdenas,Renato Contreras
José Muñoz-Espinoza
We revisit a possible mechanism for the thermal conversion of the title reaction, which appears to be driven by solvent effects by the ionic liquid (IL) dihydroxyethyldiethyl ammonium bromide Net2HE2Br. The effect of the solvent is discusse...
Formal [3 + 2] Annulation of β,β-Disubstituted Enesulfinamides with Vinyl Thianthrenium Salt: Asymmetric Construction of 3,3-Disubstituted 1-Pyrrolines [0.03%]
β,β-位取代烯亚磺酰胺与乙烯噻蒽盐的[3 + 2]形式 [α+β-γ]环化反应：轴手性3,3-二取代吡咯烷的合成
Sheng-Cong Huang,Chong-Dao Lu
Sheng-Cong Huang
Five-membered endocyclic imines featuring a quaternary carbon stereocenter at the α position of the imino group can be stereoselectively synthesized through the formal [3 + 2] annulation of β,β-disubstituted enesulfinamides with vinyl th...
Insights into the Mechanism of 2-Methylnaphthalene Friedel-Crafts Acetylation Catalyzed by AlCl3: A Combined Experimental and Theoretical Study [0.03%]
AlCl3催化2-甲基萘傅克酰基化反应机理的联合实验和理论研究
Fanyuan Zhang,Youcai Zhu,Jiongyi Chen et al.
Fanyuan Zhang et al.
The Friedel-Crafts acetylation of 2-methylnaphthalene (2-MN) represents a powerful approach for synthesizing 2-methyl-6-acetylnaphthalene (2,6-MAN). The identification of catalytically active species in Friedel-Crafts acylation has recently...
Understanding the CO2 Activation and Hydrogenation Mechanism on MXene under Electrochemical Conditions [0.03%]
电化学条件下MXene活化CO2及加氢反应机理研究
Yue Xu,Dongyue Gao,Ying Li et al.
Yue Xu et al.
MXenes are attracting growing interest as promising catalysts for CO2 reduction reactions. However, the specific activation and reduction mechanism of CO2 on MXenes under realistic electrochemical conditions remains unclear. In this study, ...
Carbonyl Hydration of the Diethyl and Dimethyl Phosphate Derivatives of Acetone: Equilibrium Constants, Polar Substituent Constants of the -CH2OP(O)(OR)2 Groups, and Use of the Marcus Equation to Clarify the Mechanism of Alkaline Hydrolysis [0.03%]
甲醛的二乙基和二甲基磷酸衍生物的亲核加成平衡常数、-ch2op(o)(or)2取代基常数及其在碱性水解反应机理研究中的应用
Timothy J Smith,Kim C Calvo,Gerald F Koser et al.
Timothy J Smith et al.
This study provides an examination of the equilibrium constants and thermodynamic quantities for hydration of the diethyl and dimethyl phosphate derivatives of acetone in D2O. Notably, our results offer direct evidence for the hydration of ...
The reaction mechanism for glycolysis side product degradation by Parkinson's disease-linked DJ-1 [0.03%]
帕金森病相关蛋白DJ-1降解己糖分解副产物的反应机理
Aiko Watanabe,Shizuka Ogiwara,Mirei Saito et al.
Aiko Watanabe et al.
DJ-1/PARK7 is the causative gene for hereditary recessive Parkinson's disease. Recent studies have reported that DJ-1 hydrolyzes cyclic 3-phosphoglyceric anhydride (cPGA), a highly reactive metabolite. However, the molecular mechanisms unde...
Protonation State of Active-Site Histidines, Reaction Mechanism and Stereoselectivity in β-Alanine Synthase: A Computational Study [0.03%]
关于β-丙氨酸合成酶活性位点组氨酸质子化状态、反应机理及立体选择性的计算研究
Wijitra Meelua,Ulf Ryde,Jitrayut Jitonnom
Wijitra Meelua
β-Alanine synthase (βAS), which is a dizinc metalloenzyme, catalyzes the irreversible hydrolysis of N-carbamyl-β-alanine (NCβA) to β-alanine. This enzyme has potential applications for β-amino acid production. Understanding the reacti...
Unraveling the mechanism of hydrogen evolution reactions in alkaline media: recent advances in in situ Raman spectroscopy [0.03%]
碱性介质中氢演化反应机理的探究：原位拉曼光谱最新进展
Jiafeng Wen,Siyuan Tang,Xiaoyi Wu et al.
Jiafeng Wen et al.
Electrocatalytic water splitting for hydrogen production stands out among various hydrogen generation technologies due to its environmental friendliness and high efficiency. In alkaline media, the electrocatalytic hydrogen evolution reactio...
N-Doped Carbon Nanotubes as Metal-Free Catalysts for PAA Activation to degrade emerging pollutants: Exploration of Reaction Mechanisms and Prediction of Active Sites [0.03%]
氮掺杂的碳纳米管作为非金属催化剂活化过氧酸盐降解新兴污染物：探索反应机理及预测活性位点
Miao Shi,Bin Zhang,Xiaoyu Yan et al.
Miao Shi et al.
In this study, we utilized urea as a nitrogen precursor and synthesized a series of nitrogen-doped carbon nanotubes with varying catalytic activities for PAA by adjusting the mass ratio of urea to carbon nanotubes (ranging from 0.01:1 to 2:...
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