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関連する概念動画

Vicinal Diols via Reductive Coupling of Aldehydes or Ketones: Pinacol Coupling Overview01:27

Vicinal Diols via Reductive Coupling of Aldehydes or Ketones: Pinacol Coupling Overview

2.3K
Wilhelm Rudolph Fittig discovered the pinacol coupling reaction in 1859. It is a radical dimerization reaction and involves the reductive coupling of aldehydes or ketones in the presence of hydrocarbon solvent to yield vicinal diols.
2.3K
Phase I Reactions: Reductive Reactions01:27

Phase I Reactions: Reductive Reactions

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Phase I biotransformation reductive reactions are chemical processes that modify drugs by introducing or revealing polar functional groups via reduction. Enzymes called reductases catalyze these reactions, playing a pivotal role in drug metabolism by transforming lipophilic drugs into more polar, water-soluble metabolites for easy excretion. An essential type of reductive reaction is the carbonyl group reduction, where aldehydes and ketones are reduced to alcohols. An example is the...
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Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids02:04

Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids

8.1K
Diols are compounds with two hydroxyl groups. In addition to syn dihydroxylation, diols can also be synthesized through the process of anti dihydroxylation. The process involves treating an alkene with a peroxycarboxylic acid to form an epoxide. Epoxides are highly strained three-membered rings with oxygen and two carbons occupying the corners of an equilateral triangle. This step is followed by ring-opening of the epoxide in the presence of an aqueous acid to give a trans diol.
8.1K
Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

10.6K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
10.6K
Oxidative Cleavage of Alkenes: Ozonolysis01:46

Oxidative Cleavage of Alkenes: Ozonolysis

13.7K
In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
13.7K
Reactions at the Benzylic Position: Oxidation and Reduction00:59

Reactions at the Benzylic Position: Oxidation and Reduction

5.5K
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.
5.5K

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関連する実験動画

Updated: Apr 1, 2026

Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS
06:34

Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS

Published on: June 20, 2014

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純四電子還元結合による脱酸素C−C結合形成プロセス

David P Todd1, Benjamin B Thompson1, Alex J Nett1

  • 1Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109-1055, United States.

Journal of the American Chemical Society
|October 6, 2015
PubMed
まとめ

この研究は,エノンまたはエナルおよびアルキンからスキップされたダイエンを効率的に合成する新しいニッケル触媒結合反応を導入します. この方法は,脱酸素化による4電子の還元結合を用いて,痕跡のないアルケンの設置戦略を提供します.

科学分野:

  • 有機化学
  • カタリシス
  • 合成方法論

背景:

  • エノンとエナルは有機合成における多用途の基質である.
  • カルボニル化合物のアルキンと直接結合することは依然として課題です.
  • skipped diene合成のための効率的な方法の開発は重要な関心事である.

研究 の 目的:

  • 新しいニッケル触媒結合反応を 開発するために
  • ダイエネ製品に直接アクセスできるようにする
  • アルケンの設置を 追跡できないようにする

主な方法:

  • ニッケル触媒によるエノン/エナルとアルキンの結合.
  • シランとアルコ酸化チタンの減少剤の使用
  • 新しいニッケル ((0) の前触媒の開発は,N-ヘテロサイクリックカルベンのリガンド.

主要な成果:

  • スキップされたダイネ産物の直接合成が達成された.
  • この反応には4電子の減量結合が含まれる.
  • 開始エノンの脱酸素化が起こります.
  • ニッケル ((0) の新種の前触媒は効率化に不可欠である.

さらに関連する動画

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
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Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

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Light-driven Enzymatic Decarboxylation
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Light-driven Enzymatic Decarboxylation

Published on: May 22, 2016

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関連する実験動画

Last Updated: Apr 1, 2026

Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS
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Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS

Published on: June 20, 2014

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Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
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Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

Published on: November 9, 2019

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Light-driven Enzymatic Decarboxylation
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Light-driven Enzymatic Decarboxylation

Published on: May 22, 2016

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結論:

  • 開発された方法は,スキップされた日々に効率的なアクセスを提供します.
  • この戦略はα,β-不飽和カルボニルの反応性を利用する.
  • 酸素の同時流出により,痕跡のないアルケンの設置が可能になる.