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Updated: Jul 9, 2025

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
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Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

Published on: July 30, 2017

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在碳胺燃料反应周期中抑制催化剂中毒

Xiaoyao Chen1, Héctor Soria-Carrera1, Oleksii Zozulia1

  • 1Department of Chemistry, School of Natural Science, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany job.boekhoven@tum.de.

Chemical science
|November 29, 2023
PubMed
概括

合成化学反应循环,灵感来自生物学,可以控制分子机器. 这项研究发现,低温,低pH值和胺添加剂在碳胺燃料循环中显著抑制了不必要的副作用,提高了效率和组装.

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Temperature-programmed Deoxygenation of Acetic Acid on Molybdenum Carbide Catalysts

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相关概念视频

Catalysis02:50

Catalysis

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Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
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Simple aryl halides do not react with nucleophiles. However, nucleophilic aromatic substitutions can be forced under certain conditions, such as high temperatures or strong bases. The mechanism of substitution under such conditions involves the highly unstable and reactive benzyne intermediate. Benzyne contains equivalent carbon centers at both ends of the triple bond, each of which is equally susceptible to nucleophilic attack. This 50–50 distribution of products is...
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Alkynes to Aldehydes and Ketones: Hydroboration-Oxidation

Introduction
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All meta-directing substituents are deactivating groups. These substituents withdraw electrons from the aromatic ring, making the ring less reactive toward electrophilic substitution. For example, the nitration of nitrobenzene is 100,000 times slower than that of benzene because of the deactivating effect of the nitro group. The first step in an electrophilic aromatic substitution is the addition of an electrophile to form a resonance-stabilized carbocation. The energy diagrams for...
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