通过光诱导EDA复合激活基的三组分氨基基关联
Chengcheng Shi1, Lin Guo1, Han Gao1
1State Key Laboratory of Urban Water Resource and Environment, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
Organic letters
|October 16, 2023
概括
一种新的无催化剂方法使得使用N-aminopyridinium盐和 heteroarenes 的多元组分氨基基和. 这种反应通过光氧激素启动的基因路径有效地产生有价值的β- heteroarylethylamines.
科学领域:
- 有机化学 有机化学
- 合成方法论 合成方法论
- 光催化作用的光催化
背景情况:
- 氨基甲基化反应对于合成含有的异环化合物至关重要.
- 现有的方法通常需要恶劣的条件,催化剂或多个步骤.
- 对β-heterarylethylamines的高效和温和合成路径的开发仍然是一个活跃的研究领域.
研究的目的:
- 开发一种新的无催化剂方法,用于基因的多元组合氨基基和.
- 在良好的产量中合成有价值的β-heteroarylethylamines.
- 为了探索这种转换的光反引发的单电子转移机制.
主要方法:
- 使用N-aminopyridinium盐和 heteroarenes作为关键反应剂.
- 使用光辐射启动单电子转移 (SET) 过程.
- 杆激素中间体和Minisci类反应用于产品的形成.
主要成果:
- 成功演示了一种无催化剂的多元组分反应,用于氨基和.
- 达到了良好的功能性群体耐受性,使得各种β-heteroarylethylamines的合成.
- 报告了对所需产品的令人满意的产量.
结论:
- 开发的方法提供了一个简单而有效的途径,以β-heteroarylethylamines.
- 反应通过一个由光基启动的SET机制进行,其中涉及基和异基.
- 这种方法为构建复杂的含分子提供了有价值的工具.
相关概念视频
Photochemical Electrocyclic Reactions: Stereochemistry
1.8K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
1.8K
Cycloaddition Reactions: MO Requirements for Photochemical Activation
2.1K
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.
2.1K
Acid-Catalyzed Dehydration of Alcohols to Alkenes
19.8K
In a dehydration reaction, a hydroxyl group in an alcohol is eliminated along with the hydrogen from an adjacent carbon. Here, the products are an alkene and a molecule of water. Dehydration of alcohols is generally achieved by heating in the presence of an acid catalyst. While the dehydration of primary alcohols requires high temperatures and acid concentrations, secondary and tertiary alcohols can lose a water molecule under relatively mild conditions.
19.8K
Amines to Alkenes: Hofmann Elimination
2.5K
Alkenes can be obtained from amines via an E2 elimination. The amine is first converted into a good leaving group, such as a quaternary ammonium salt. This is accomplished by treating the amine with an excess of alkyl halide, which results in a halide salt. Next, the halide salt is transformed into a hydroxide salt that functions as a base to enable elimination.
Under thermal conditions, the hydroxide can abstract a proton from the β carbon; this generates an alkene with the simultaneous...
Under thermal conditions, the hydroxide can abstract a proton from the β carbon; this generates an alkene with the simultaneous...
2.5K
Aldol Condensation with β-Diesters: Knoevenagel Condensation
3.1K
The Knoevenagel condensation is an aldol-type reaction involving the condensation of aldehydes or ketones with active methylene compounds such as β-diesters to produce substituted olefins.
3.1K
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry
3.9K
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.
3.9K

![[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)
