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

Prochirality02:05

Prochirality

4.6K
The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
4.6K
Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration02:34

Regioselectivity and Stereochemistry of Acid-Catalyzed Hydration

9.2K
The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.
9.2K
[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement01:21

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

3.1K
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.
3.1K
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction01:16

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

11.6K
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.
11.6K
Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry01:29

Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry

5.1K
Diels–Alder reactions between cyclic dienes locked in an s-cis configuration and dienophiles yield bridged bicyclic products.
5.1K
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

6.6K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
6.6K

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

Differences between males and females in psychostimulant/sucrose self-administration (when observed) may not necessarily be driven by biological sex.

bioRxiv : the preprint server for biology·2026
Same author

The recreational-to-habitual shift in psychostimulant use is an economic demand parameter that is unrelated to drug consumption levels (under normal and punishment conditions).

bioRxiv : the preprint server for biology·2026
Same author

Green synthesized selenium nanoparticles-based amelioration of Cd toxicity in radish using seed priming.

Scientific reports·2026
Same author

Boosting Low-Temperature Solid Oxide Fuel Cell Performance via Niobium and Indium Co-Doped SrCoO<sub>3-δ</sub> Nanostructured Perovskite Cathode.

ChemPlusChem·2026
Same author

Expert consensus on robotic colorectal surgery proctoring in the UK.

Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland·2026
Same author

Multiwavelength Multipoint Observations of the October 28, 2021 Type III Radio Burst.

Solar physics·2026

相关实验视频

Updated: Nov 27, 2025

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of &#945;-Imino &#947;-Lactones and Alkylidene Pyrazolones
10:17

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones

Published on: February 7, 2019

7.2K

一个Pd6同体八面体与一个C3-对称的Pyridyl捐赠者的客体诱导的自组

Prodip Howlader1, Surajit Mondal1, Shakil Ahmed1

  • 1Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India.

Journal of the American Chemical Society
|December 7, 2020
PubMed
概括
此摘要是机器生成的。

亚希拉尔的自我组装通常会产生血混合物. 这项研究展示了一种新的方法,使用奇拉客分子选择性地形成enantiopure奇拉八面体,这是超分子化学的重大进步.

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

7.7K
Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

8.0K

相关实验视频

Last Updated: Nov 27, 2025

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of &#945;-Imino &#947;-Lactones and Alkylidene Pyrazolones
10:17

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones

Published on: February 7, 2019

7.2K
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

7.7K
Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
09:22

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

8.0K

科学领域:

  • 超分子化学
  • 协调化学
  • 基质材料科学

背景情况:

  • 用金属离子自组合的阿基拉组件通常会产生血混合物或阿基拉结构.
  • 在化学中,从阿基拉前体获得纯净的自我组装架构是一个重大挑战.
  • 在自组装过程中控制立体化学对于开发具有特定功能的奇拉材料至关重要.

研究的目的:

  • 开发一种选择性合成纯自组装架构的新策略.
  • 调查性客分子对自组合的立体化学结果的影响.
  • 为了展示一本小说
  • 反向合识别
  • 这是一个超分子化学现象.

主要方法:

  • 一个C3-对称tripyridyl供体 (L·HNO3) 和一个 (II) 复合体 (cis-[(tmeda) Pd ((NO3) 2)) 之间的自组合反应.
  • 在自组合过程中引入奇拉客分子 (R-BINOL或S-BINOL).
  • 使用光谱和晶体学方法分析状八面体的结果立体体.

主要成果:

  • 没有奇拉客的自组反应产生了奇拉八面体的复杂立体同位素混合物.
  • 存在R-BINOL可以选择性地诱导单个的形成.
  • S-BINOL的存在选择性地诱导了子相反的反体的形成.
  • 这表明了"反向性识别",客人决定主机的性.

结论:

  • 已经开发出一种新且有效的方法来实现纯净的自组装.
  • 在自组合过程中,状客分子可以作为立体化学的有效控制器.
  • 观察到的"反向性识别"为设计性超分子结构提供了新的可能性.