由可见光驱动的多米诺反应向含的异环反应
Yang Li1, Dong Xia2, Wen-Chao Yang3
1School of Bioengineering, Huainan Normal University, Huainan, 232038, P. R. China. yangli@hnnu.edu.cn.
Organic & biomolecular chemistry
|September 12, 2025
概括
可见光光催化能通过多米诺反应有效合成含的异环. 这种绿色化学方法利用激进机制在温和条件下构建复杂分子.
科学领域:
- 有机化学 有机化学
- 药用化学 医学化学
- 绿色化学 绿色化学
背景情况:
- 含的异环在药品,天然产品和材料中至关重要.
- 可见光光催化为合成这些化合物提供了一种环保和温和的方法.
- 多米诺反应通过单个电子转移,能量转移或原子转移简化了多步合成.
研究的目的:
- 审查最近在可见光诱导的多米诺反应中取得的进展,以合成含的异环.
- 突出这一领域的关键策略,机制和应用.
- 讨论当前的局限性和绿色合成的未来方向.
主要方法:
- 专注于可见光诱导的多米诺反应.
- 探索以为中心的基因介导的C-N键形成.
- 对以碳为中心的激素发起的循环化机制的分析.
主要成果:
- 演示高效的多步串联转换.
- 尽量减少中间隔离和净化步骤.
- 推进对环境无害的合成路线.
结论:
- 可见光多米诺反应是构建异循环的强大工具.
- 这一综述提供了对机制,局限性和未来前景的见解.
- 这些发现支持绿色合成和制药科学的进步.
相关概念视频
Cycloaddition Reactions: MO Requirements for Photochemical Activation
2.6K
Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.
2.6K
Nitrosation of Enols
9.1K
The nitrosation reaction is one of the methods of preparing 1,2-diketones. The enol tautomer of the starting ketone reacts with sodium nitrite in hydrochloric acid, generating the 1,2-diketone after hydrolysis.
9.1K
2° Amines to N-Nitrosamines: Reaction with NaNO2
5.4K
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
5.4K
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Mechanism
4.8K
Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.
4.8K
ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3
7.3K
All ortho–para directors, excluding halogens, are activating groups. These groups donate electrons to the ring, making the ring carbons electron-rich. Consequently, the reactivity of the aromatic ring towards electrophilic substitution increases. For instance, the nitration of anisole is about 10,000 times faster than the nitration of benzene. The electron-donating effect of the methoxy group in anisole activates the ortho and para positions on the ring and stabilizes the corresponding...
7.3K
Reaction Mechanisms
30.5K
Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
30.5K


![Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F60786.jpg&w=3840&q=50)