芳香的米斯洛 - 布拉弗曼 - 埃文斯阿里硫氧化物重新排列
Xinping Zhang1, Jiliang Li1, Madeline E Rotella2
1Research Center for Chemical Biology and Omics Analysis, Department of Chemistry, Southern University of Science and Technology, 1088 Xueyuan Blvd., Shenzhen, Guangdong 518055, P.R. China.
JACS Au
|February 28, 2025
概括
这项研究引入了一种新型的可爱芳香的Mislow-Braverman-Evans重排,使得从硫酸酸中合成醇. 这扩大了重新排列的范围,以创建多样化的酒精结构.
科学领域:
- 有机化学 有机化学
- 合成方法论 合成方法论
背景情况:
- 米斯洛-布拉弗曼-埃文斯重组是一种关键的[2,3]-sigmatropic转化,将基硫氧化物转化为基硫酸.
- 现有的应用主要产生合醇,对类似的合醇的获取有限.
研究的目的:
- 开发一种前所未有的可爱芳香的Mislow-Braverman-Evans重组,用于合成醇.
- 扩大这种重新排列在有机合成和药物化学中的实用性.
主要方法:
- 亚利硫氧化物的体积重组.
- 使用基C-H键的可逆去质子化进行 dearomative tautomerization.
- 使用密度函数理论 (DFT) 计算来阐明反应机制和立体控制.
主要成果:
- 从各种烯和异烯硫氧化物中成功合成多种初级,二级和三级烯醇.
- 已证明具有广泛的功能组耐受性和与α-纳非硫化物相容性.
- 在专利生物活性分子的二分体选择性合成中的应用.
结论:
- 开发的协议提供了一条新的途径,通过可芳香的Mislow-Braverman-Evans重组来获得醇.
- 该机制涉及 dearomative 分体化和立体控制的质子化,可逆的步骤导致潜在的 enantiopurity 侵蚀.
- 这种方法为复杂分子合成和药物化学中的应用提供了显著的潜力.
相关概念视频
Nucleophilic Aromatic Substitution: Addition–Elimination (SNAr)
3.7K
Nucleophilic substitution in aromatic compounds is feasible in substrates bearing strong electron-withdrawing substituents positioned ortho or para to the leaving group. The reaction proceeds via two steps: the addition of the nucleophile and the elimination of the leaving group.
The reaction begins with an attack of the nucleophile on the carbon that holds the leaving group. This results in the delocalization of the π electrons over the ring carbons. The resonance interaction between...
The reaction begins with an attack of the nucleophile on the carbon that holds the leaving group. This results in the delocalization of the π electrons over the ring carbons. The resonance interaction between...
3.7K
[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement
2.1K
The Claisen rearrangement is a [3,3] sigmatropic rearrangement of allyl vinyl ethers to unsaturated carbonyl compounds. The rearrangement is a concerted pericyclic reaction proceeding via a chair-like transition state.
2.1K
Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview
3.2K
In the presence of an aqueous base and a halogen, primary amides can lose the carbonyl (as carbon dioxide) and undergo rearrangement to form primary amines. This reaction, called the Hofmann rearrangement, can produce primary amines (aryl and alkyl) in high yields without contamination by secondary and tertiary amines.
3.2K
[3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement
2.6K
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.
2.6K
Nucleophilic Aromatic Substitution of Aryldiazonium Salts: Aromatic SN1
2.1K
Treating arylamines with nitrous acid gives aryldiazonium salts that are effective substrates in nucleophilic aromatic substitution reactions. The diazonio group in these salts can be easily displaced by different nucleophiles, yielding a wide variety of substituted benzenes. The leaving group departs as nitrogen gas, and this easy elimination is the driving force for the substitution reaction.
In the Sandmeyer reaction, for example, the diazonio group is replaced by a chloro, bromo,...
In the Sandmeyer reaction, for example, the diazonio group is replaced by a chloro, bromo,...
2.1K
Nucleophilic Aromatic Substitution: Elimination–Addition
4.0K
Simple aryl halides do not react with nucleophiles. However, nucleophilic aromatic substitutions can be forced under certain conditions, such as high temperatures or strong bases. The mechanism of substitution under such conditions involves the highly unstable and reactive benzyne intermediate. Benzyne contains equivalent carbon centers at both ends of the triple bond, each of which is equally susceptible to nucleophilic attack. This 50–50 distribution of products is...
4.0K

![Solid-phase Synthesis of [4.4] Spirocyclic Oximes](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F58508.jpg&w=3840&q=50)
