通过可控制的铜和金催化Divinylallenes的多环N-异环的分离合成
Mi Li1, Shi-Jie Liu2, Kua-Fei Wei1
1College of Science, Henan Agricultural University, Zhengzhou 450002, China.
JACS Au
|August 29, 2025
概括
铜催化剂可以从divinylallenes中合成新型N-异环,为贵金属提供多功能替代品. 这项研究扩展了金属碳素化学与催化剂控制的选择性和原子经济反应.
科学领域:
- 有机化学
- 催化剂
- 异环化学
背景情况:
- 金属碳化学是有机合成的关键.
- 目前的方法通常依赖于昂贵的贵金属催化剂 (Au,Pt).
- 开发像铜这样丰富的金属催化剂是非常理想的.
研究的目的:
- 开发一种由铜催化的方法来从divinylallenes中合成N-异环.
- 在金属碳反应中探索催化剂控制的选择性.
- 根据催化剂选择和反应条件,研究不同的反应途径.
主要方法:
- 在铜催化下进行非对称循环生成.
- 为了比较,黄金催化循环.
- 一个过程中的氧化非对称反应.
- 密度函数理论 (DFT) 计算用于机械洞察.
主要成果:
- 铜催化通过1,2-N转移产生化和四环N异环.
- 黄金催化只能通过1,2-H迁移产生三环N-异环.
- 通过铜催化氧化实现的与环丹融合的三环异环的分离合成.
- 机理研究证实了不同的迁移途径和催化剂控制.
结论:
- 铜催化反应为各种N-异环提供了实用和原子经济的途径.
- 催化剂的选择 Au) 决定了反应路径和产品的结果.
- 开发的方法在金属碳素化学和异环合成方面取得了重大进展.
更多相关视频
相关概念视频
Cycloaddition Reactions: Overview
2.8K
Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
2.8K
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
10.5K
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.
10.5K
Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry
4.7K
Diels–Alder reactions between cyclic dienes locked in an s-cis configuration and dienophiles yield bridged bicyclic products.
4.7K
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry
4.0K
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.
4.0K
Thermal and Photochemical Electrocyclic Reactions: Overview
2.4K
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.
2.4K
Cyclohexenones via Michael Addition and Aldol Condensation: The Robinson Annulation
2.3K
Robinson annulation is a base-catalyzed reaction for the synthesis of 2-cyclohexenone derivatives from 1,3-dicarbonyl donors (such as cyclic diketones, β-ketoesters, or β-diketones) and α,β-unsaturated carbonyl acceptors. Named after Sir Robert Robinson, who discovered it, this reaction yields a six-membered ring with three new C–C bonds (two σ bonds and one π bond).
2.3K


![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)