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Updated: May 14, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
09:37

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Published on: October 18, 2019

证据证明金属表面相互作用及其在稳定明确固定Ru-NHC基因转化催化剂中的作用

Manoja K Samantaray1, Johan Alauzun, David Gajan

  • 1C2P2, UMR 5265, Université de Lyon, Institut de Chimie de Lyon, UMR 5265 CNRS-Université Lyon 1-ESCPE Lyon, LC2P2, Equipe COMS, ESCPE Lyon, 69616 Villeurbanne, France.

Journal of the American Chemical Society
|February 1, 2013
PubMed
概括

二次相互作用稳定了-N-异环碳素 (Ru-NHC) 异质催化剂的基转化. 灵活的连接器通过允许可逆活性位点与支表面相互作用来提高催化剂的稳定性和性能.

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Heterogeneous Catalysis01:22

Heterogeneous Catalysis

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Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
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Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

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Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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Alkynes to Aldehydes and Ketones: Acid-Catalyzed Hydration

Introduction
Analogous to alkenes, alkynes also undergo acid-catalyzed hydration. While the addition of water to an alkene gives an alcohol, hydration of alkynes produces different products such as aldehydes and ketones.