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関連する概念動画

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation02:17

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

3.8K
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...
3.8K
Reduction of Alkenes: Catalytic Hydrogenation02:13

Reduction of Alkenes: Catalytic Hydrogenation

13.9K
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.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
13.9K
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation02:24

Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

8.9K
Introduction
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
8.9K
Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation01:28

Reduction of Benzene to Cyclohexane: Catalytic Hydrogenation

5.6K
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...
5.6K
Radical Anti-Markovnikov Addition to Alkenes: Overview01:25

Radical Anti-Markovnikov Addition to Alkenes: Overview

4.0K
The addition of hydrogen bromide to alkenes in the presence of hydroperoxides or peroxides proceeds via an anti-Markovnikov pathway and yields alkyl bromides.
4.0K
Catalysis02:50

Catalysis

30.0K
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.
30.0K

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関連する実験動画

Updated: Jan 8, 2026

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
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Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

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支持されたルテニウム・フォスフィード・ナノ粒子触媒を用いたヘテロアレンの選択的水素化

Hooman Ghazi Zahedi1,2, Jannis Hertel1, Bhaskar Paul1

  • 1Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany.

Journal of the American Chemical Society
|December 23, 2025
PubMed
まとめ
この要約は機械生成です。

ルテニウム酸化ナノ粒子 (RuxP100-x@SILP) はヘテロアレン水素化を触媒とする. これらの強力な触媒は 薬の分子と微細な化学物質の 効率的な合成を可能にします

さらに関連する動画

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

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Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
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Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction

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関連する実験動画

Last Updated: Jan 8, 2026

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
12:08

Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes

Published on: June 24, 2022

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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

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Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
10:39

Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction

Published on: August 23, 2018

8.3K

科学分野:

  • キャタリシス
  • 材料科学
  • 有機化学

背景:

  • ヘテロアレン水素化は,医薬品と微細化学品の合成に不可欠です.
  • 効率的で 選択的で 堅固な触媒の開発は これらの変化に不可欠です

研究 の 目的:

  • イオン性液相 (RuxP100-x@SILP) をサポートする新しいルテニウム酸化ナノ粒子触媒を開発する.
  • 様々なヘテロアレンを選択的に水素化する効果を調査する.
  • 価値ある分子を作るために 合成の有用性を示します

主な方法:

  • オルガノメタリックアプローチによるルテニウム酸化ナノ粒子 (NP) の合成
  • イミダゾリウムベースのサポートされたイオン液相 (SILP) へのNPの固定化.
  • 電子顕微鏡とX線光譜を用いた特徴付け.
  • バッチと連続フロー条件下での触媒活性と選択性の試験

主要な成果:

  • RuxP100-x@SILP触媒は,ヘテロアレン水素化のための高い活性,選択性,および強度を示しています.
  • Ru50P50@SILP触媒は,基板の幅広い範囲を示した.
  • クスパレインやサルソリジンなどの薬物の合成が成功しました
  • 精細化学品と医薬品の同位体ラベル付きシントンへのアクセスは可能になりました.

結論:

  • 支持されたイオン液相のルテニウム酸化ナノ粒子は,ヘテロアレン水素化のための効果的な触媒である.
  • 開発された触媒は複雑な有機分子を合成するための多用途のプラットフォームを提供します.
  • このアプローチは,価値ある医薬品の中間製品と細かい化学物質への効率的なアクセスを提供します.