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

[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction01:16

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

12.1K
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.
12.1K
Woodward–Hoffmann Selection Rules and Microscopic Reversibility01:34

Woodward–Hoffmann Selection Rules and Microscopic Reversibility

3.7K
Electrocyclic reactions, cycloadditions, and sigmatropic rearrangements are concerted pericyclic reactions that proceed via a cyclic transition state. These reactions are stereospecific and regioselective. The stereochemistry of the products depends on the symmetry characteristics of the interacting orbitals and the reaction conditions. Accordingly, pericyclic reactions are classified as either symmetry-allowed or symmetry-forbidden. Woodward and Hoffmann presented the selection criteria for...
3.7K
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry01:28

Diels–Alder Reaction Forming Cyclic Products: Stereochemistry

4.6K
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.
4.6K
Cycloaddition Reactions: MO Requirements for Thermal Activation01:16

Cycloaddition Reactions: MO Requirements for Thermal Activation

4.1K
Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
4.1K
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

12.5K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
12.5K
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.9K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.9K

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

Bistelluridopnictanes as gateways to telluradipnictiranes and a cyclic [Bi<sub>2</sub>Te<sub>2</sub>]<sup>2+</sup> dication.

Chemical science·2026
Same author

Multinuclear Mixed-Valent Co-Oxido Complexes: Synthesis, Structure, Magnetic, and Electrochemical Properties.

Inorganic chemistry·2026
Same author

The ATP-independent dihydro-2-phenanthroyl-CoA reductase AprC catalyzes two consecutive two-electron reduction steps of dihydro-2-phenanthroyl-CoA to hexahydro-2-phenanthroyl-CoA in anaerobic phenanthrene degradation.

Applied and environmental microbiology·2026
Same author

Identification of a distinct family of polyphosphate kinases relevant to energy homeostasis in Crenarchaeota.

The Journal of biological chemistry·2026
Same author

Double E─H Bond Activation of Ammonia and Water by Cyclic Gallaphosphene L(OCP)GaPGaL.

Angewandte Chemie (International ed. in English)·2026
Same author

Multistate Azobenzene-Norbornadiene Photoswitches for Molecular Solar Thermal Energy Storage.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025

相关实验视频

Updated: Jan 6, 2026

Microfluidic On-chip Capture-cycloaddition Reaction to Reversibly Immobilize Small Molecules or Multi-component Structures for Biosensor Applications
14:43

Microfluidic On-chip Capture-cycloaddition Reaction to Reversibly Immobilize Small Molecules or Multi-component Structures for Biosensor Applications

Published on: September 23, 2013

11.2K

迪亚里尔氧化物作为溶液中的可逆识别阵列.

Zoe Nonie Scheller1, Noel Miszewski1, Felix Brinkmann1

  • 1Fakultät für Chemie, Universität Duisburg-Essen, Universitätsstr. 7, Essen D-45117, Germany.

Inorganic chemistry
|October 30, 2025
PubMed
概括

这项研究表明,透露氧化物通过Te·O相互作用在溶液中形成稳定的二次体. 这一发现使得能够设计出新的响应性分子架构,比如稳定阿佐衍生物.

更多相关视频

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

7.8K
Electronic Tongue Generating Continuous Recognition Patterns for Protein Analysis
08:46

Electronic Tongue Generating Continuous Recognition Patterns for Protein Analysis

Published on: September 16, 2014

8.2K

相关实验视频

Last Updated: Jan 6, 2026

Microfluidic On-chip Capture-cycloaddition Reaction to Reversibly Immobilize Small Molecules or Multi-component Structures for Biosensor Applications
14:43

Microfluidic On-chip Capture-cycloaddition Reaction to Reversibly Immobilize Small Molecules or Multi-component Structures for Biosensor Applications

Published on: September 23, 2013

11.2K
Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

7.8K
Electronic Tongue Generating Continuous Recognition Patterns for Protein Analysis
08:46

Electronic Tongue Generating Continuous Recognition Patterns for Protein Analysis

Published on: September 16, 2014

8.2K

科学领域:

  • 超分子化学 超分子化学
  • 有机化学 有机化学

背景情况:

  • 在超分子化学中,素结合至关重要,但在溶液相应用中是有限的.
  • 实现强大的结合通常需要多价值或充电系统.

研究的目的:

  • 为在溶液中的二甲基氧化物中提供分子间Te··O相互作用的证据.
  • 探索这些相互作用在稳定分子架构中的应用.

主要方法:

  • 量子化学计算 量子化学计算
  • 扩散顺序的光谱学核磁共振 (DOSY NMR)
  • 标位研究研究 标位研究

主要成果:

  • 在diaryl telluroxides中发现了分子间Te··O相互作用的证据.
  • 在溶液中识别二度二甲氧化物种.
  • 通过分子内Te··O稳定,成功延长了一种阿佐烯衍生物的热 cis 半衰期.

结论:

  • 迪亚里尔氧化物通过Te··O相互作用在溶液中形成稳定的二度物种.
  • 基于氧化物的系统显示出创造响应性分子架构的潜力.
  • 这项工作扩大了素结合在溶液相超分子化学中的实用性.