氧气协调促进单原子Cu(II) - 催化化-基因点击化学,没有减少剂
Tingting Yu1, Lei Tao2, Zhiyi Liu1
1Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, Zhejiang, China.
ACS applied materials & interfaces
|April 11, 2024
概括
这项研究引入了用于点击化学的高效O-协调单原子铜 (II) 催化剂,克服了传统催化剂的局限性. 在O-协调催化剂显示显著更高的活性,使催化没有减少剂.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
背景情况:
- 单原子 (SA) 催化剂为同质催化提供了独特的活性点,但由于固定的协调环境而面临挑战.
- 点击化学是一种有价值的合成工具,经常受到随时可用的Cu (II) 催化剂的低活性的限制,特别是没有减少剂.
研究的目的:
- 开发高效,O-协调的SA Cu (II) 催化剂,能够直接催化点击化学.
- 研究协调环境在点击反应中SA Cu (II) 的催化活性中的作用.
主要方法:
- 利用理论计算来确定促进点击反应的最佳协调结构.
- 采用有机分子辅助的策略,以O和N协调合成SA Cu催化剂.
- 进行控制实验以阐明催化机制并比较催化剂性能.
主要成果:
- 开发了O-协调的SA Cu ((II) 催化剂,直接促进点击化学.
- 与O协调的SA Cu (II) 催化剂的活性比N协调的催化剂高5倍.
- 实现了优越的催化活性,超过传统的同质和异质Cu (II) 催化剂.
- 证明O-协调的SA Cu ((II) 优先通过基因被降解为Cu乙化物,从而促进点击反应.
结论:
- 有O协调的SA Cu (II) 催化剂在实现高效的点击化学方面取得了重大进展.
- 协调环境在SA Cu (II) 催化剂的催化性能中起着至关重要的作用.
- 这项工作为开发用于重要化学转换的高活性和选择性单原子催化剂提供了新的途径.
![[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)
相关概念视频
01:46Oxidative Cleavage of Alkenes: Ozonolysis
10.3K
In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
10.3K
02:44Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
10.1K
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.
10.1K
02:36Oxymercuration-Reduction of Alkenes
7.5K
Oxymercuration–reduction of alkenes is one of the major reactions converting alkenes to alcohols. It involves the hydration of alkenes with mercuric acetate in a mixture of tetrahydrofuran and water, forming an organomercury adduct. This is followed by a demercuration step in which the adduct is reduced to an alcohol using sodium borohydride.
7.5K
00:59Reactions at the Benzylic Position: Oxidation and Reduction
3.6K
The benzylic position describes the position of a carbon atom attached directly to a benzene ring. Benzene by itself does not undergo oxidation. In contrast, the benzylic carbon is quite reactive in the presence of strong oxidizing agents such as KMnO4 or H2CrO4. Therefore, alkylbenzenes are readily oxidized to benzoic acid, irrespective of the type of alkyl groups.
3.6K
02:24Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
7.7K
Introduction
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
7.7K
01:20Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
1.9K
Arenediazonium substitution reactions occur when the diazonium group is substituted by various functional groups such as halides, hydroxyl, nitrile, etc. For instance, arenediazonium salts react with copper(I) salts of chloride, bromide, or cyanide to form corresponding aryl chlorides, bromides, and nitriles. These reactions are named Sandmeyer reactions. Although the mechanism of this reaction is complicated, as illustrated in Figure 1, they are believed to progress via an aryl copper...
1.9K