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Updated: Jul 8, 2025

HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin
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HKUST-1 as a Heterogeneous Catalyst for the Synthesis of Vanillin

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在三铁氧中心集群基金属有机框架上二氧化的机制

Jenny G Vitillo1, Madhuresh Choudhary2, Matthew C Simons2

  • 1Department of Science and High Technology and INSTM, Università Degli Studi Dell'Insubria, Via Valleggio 9, Como I-22100, Italy.

The journal of physical chemistry. C, Nanomaterials and interfaces
|December 13, 2023
PubMed
概括

在金属有机框架 (MOF) 中的高价值铁 (IV) -oxo物种通过电友添加选择性地化,模仿P450酶. 这与在异形C-H键激活中看到的抽象形成鲜明对比.

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Reactions at the Benzylic Position: Oxidation and Reduction

The benzylic position describes the position of a carbon atom attached directly to a benzene ring. Benzene by itself does not undergo oxidation. In contrast, the benzylic carbon is quite reactive in the presence of strong oxidizing agents such as KMnO4 or H2CrO4. Therefore, alkylbenzenes are readily oxidized to benzoic acid, irrespective of the type of alkyl groups.
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Unlike the easy catalytic hydrogenation of an alkene double bond, hydrogenation of a benzene double bond under similar reaction conditions does not take place easily. For example, in the reduction of stilbene, the benzene ring remains unaffected while the alkene bond gets reduced. Hydrogenation of an alkene double bond is exothermic and a favorable process. In contrast, to hydrogenate the first unsaturated bond of benzene, an energy input is needed; that is, the process is endothermic. This is...
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Chlorination and bromination are important classes of electrophilic aromatic substitutions, where benzene reacts with chlorine or bromine in the presence of a Lewis acid catalyst to give halogenated substitution products. A Lewis acid such as aluminium chloride or ferric chloride catalyzes the chlorination, and ferric bromide catalyzes the bromination reactions. During the bromination of alkenes, bromine polarizes and becomes electrophilic. However, in the bromination of benzene, the bromine...
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He proposed that benzene has a cyclic structure of six carbon atoms attached to one hydrogen atom each, with three alternating pi bonds.
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