Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement01:21

[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement

3.6K
The Cope rearrangement is classified as a [3,3] sigmatropic shift in 1,5-dienes, leading to a more stable, isomeric 1,5-diene. The reaction involves a concerted movement of six electrons, four from two π bonds and two from a σ bond, via an energetically favorable chair-like transition state.
3.6K
[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement01:24

[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement

3.0K
The Claisen rearrangement is a [3,3] sigmatropic rearrangement of allyl vinyl ethers to unsaturated carbonyl compounds. The rearrangement is a concerted pericyclic reaction proceeding via a chair-like transition state.
3.0K
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction01:16

[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

13.7K
The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
13.7K
Thermal Sigmatropic Reactions: Overview01:16

Thermal Sigmatropic Reactions: Overview

2.6K
Sigmatropic rearrangements are a class of pericyclic reactions in which a σ bond migrates from one part of a π system to another. These are intramolecular rearrangements where the total number of σ and π bonds remain unchanged.
Sigmatropic shifts are classified based on an order term [i, j ], where i and j indicate the number of atoms across which each end of the σ bond migrates. Below are examples of a [3,3] sigmatropic shift in 1,5-hexadiene, referred...
2.6K
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry01:28

Diels–Alder Reaction Forming Cyclic Products: Stereochemistry

5.3K
The Diels–Alder reaction is one of the robust methods for synthesizing unsaturated six-membered rings. The reaction involves a concerted cyclic movement of six π electrons: four π electrons from the diene and two π electrons from the dienophile.
5.3K
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

2.3K
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
2.3K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Silylated Stannanes and Stannides.

Inorganic chemistry·2026
Same author

Boragerma[5]pyramidanes via a Germole-to-Borole Rearrangement.

Inorganic chemistry·2026
Same author

Mono- and bimetallic homo- and heterodinuclear Pd and Pt complexes bridged by diphosphines: synthesis, characterisation and cytotoxicity.

Dalton transactions (Cambridge, England : 2003)·2025
Same author

Rational Design of Cationic Silyl Lewis Acids.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025
Same author

Conservation of the Total Order of the Axial SiSi and N → Si Bonds in Oligosilanylsilatranes.

Chemphyschem : a European journal of chemical physics and physical chemistry·2025
Same author

Homo and heteromultimetallic complexes containing a group 8 transition metal and μ-diphosphine bridging ligands involved in anticancer research: A review.

European journal of medicinal chemistry·2024

相关实验视频

Updated: Mar 21, 2026

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

10.5K

在Oligosilanes中分散能量驱动的Wagner-Meerwein重排

Lena Albers1, Saskia Rathjen1, Judith Baumgartner2

  • 1Institute of Chemistry, Carl von Ossietzky University Oldenburg , Carl von Ossietzky-Str. 9-11, 26129 Oldenburg, Federal Republic of Germany.

Journal of the American Chemical Society
|May 20, 2016
PubMed
概括

易斯酸诱导的骨重组形成了复杂的结构. 吸引力分散力, 而不是电子效应, 驱动这些瓦格纳-米尔维恩在系统中的重排.

更多相关视频

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

10.2K
Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
07:39

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst

Published on: June 8, 2016

10.1K

相关实验视频

Last Updated: Mar 21, 2026

Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

10.5K
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

10.2K
Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
07:39

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst

Published on: June 8, 2016

10.1K

科学领域:

  • 有机化学
  • 反应机制
  • 计算化学

背景情况:

  • 氧化是一种基于的化合物,具有多种应用.
  • 骨重组对于合成复杂的分子结构至关重要.
  • 了解反应机制是控制化学转换的关键.

研究的目的:

  • 为了研究易斯酸诱导的线性寡基素的骨重组.
  • 阐明控制复杂寡结构形成的关键因素.
  • 为了比较氧化和碳化合物系统中的重新排列机制.

主要方法:

  • 在稳定的离子条件下研究反应.
  • 使用低温多核核核磁共振光谱鉴定中间.
  • 通过替代实验研究反应途径.
  • 使用密度函数理论 (DFT) 的计算.

主要成果:

  • 从线性前体成功安装了复杂的寡结构.
  • 确定了三甲基基之间的吸引力分散力对产品形成至关重要.
  • 证明这些分散相互作用决定了格纳-米尔韦恩重组的过程.
  • 这与由电子效应主导的碳化合物重组机制形成对比.

结论:

  • 分散力量在寡骨重组中起着主导作用.
  • 在和碳系统中,瓦格纳-米尔温重组的机制有很大差异.
  • 这项研究提供了有关有机反应途径的基本见解.