(I) - 催化非选择性异氧化联,使用Umpoled内
Nguyen H Nguyen1, Sanghyup Seo1,2, Jiwon Jang1
1Department of Chemistry, Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Korea.
Organic letters
|August 20, 2024
概括
一种新的铜催化反应使得从N-碳氧和中合成轴性性林. 这种方法利用一种独特的机制,用于广泛的基质范围和高的酶选择性,防止奇拉性损失.
科学领域:
- 有机化学 有机化学
- 催化剂是一种催化剂.
- 不对称的合成方法
背景情况:
- 轴性形的arylindoles是药物化学和材料科学中的重要结构动图.
- 开发高效和enantioselective方法来合成它们仍然是一个重大挑战.
研究的目的:
- 开发一种新型的enantioselective催化方法,用于合成轴性性arylindoles.
- 探索所发生反应的范围和机制.
主要方法:
- 铜 (I) 催化合反应发生在N-carboxyindoles和2-naphthols/phenols之间.
- 使用实验证据和密度函数理论 (DFT) 计算的机械研究.
主要成果:
- 成功开发了一个enantioselectiveCu(I) 催化合反应.
- 在使用2-醇和醇进行C-H arylation的前所未有的多样性.
- 阐明了一种涉及外层攻击的新型封闭外机制.
- 通过中心到轴的奇拉性转移实现了 enantiocontrol,防止了表皮化.
结论:
- 开发的方法为各种各样的轴性性arylindoles提供了一条多功能途径.
- 这种新的机制为不对称催化和C-H功能化提供了洞察力.
- 这项工作扩大了合成工具箱,以获取有价值的性化合物.
![[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
01:22Alkenes via Reductive Coupling of Aldehydes or Ketones: McMurry Reaction
1.9K
The radical dimerization of ketones or aldehydes gives vicinal diols through a pinacol coupling reaction. However, the behavior of titanium metals used for the reaction as a source of electrons is unusual. When the reaction is carried out in the presence of titanium, diols can be isolated at low temperatures. Else titanium further reacts with diols, forming alkenes through the McMurry reaction.
1.9K
01:27Vicinal Diols via Reductive Coupling of Aldehydes or Ketones: Pinacol Coupling Overview
1.7K
Wilhelm Rudolph Fittig discovered the pinacol coupling reaction in 1859. It is a radical dimerization reaction and involves the reductive coupling of aldehydes or ketones in the presence of hydrocarbon solvent to yield vicinal diols.
1.7K
01:27Cyclohexenones via Michael Addition and Aldol Condensation: The Robinson Annulation
2.1K
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).
2.1K
![[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2Ffiles%2Fmedia%2Fscience-education%2Fscience-education-thumbs%2F12417.jpg&w=3840&q=75)
01:16[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
10.1K
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.
10.1K
02:36Regioselectivity and Stereochemistry of Hydroboration
8.1K
A significant aspect of hydroboration–oxidation is the regio- and stereochemical outcome of the reaction.
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn...
Hydroboration proceeds in a concerted fashion with the attack of borane on the π bond, giving a cyclic four-centered transition state. The –BH2 group is bonded to the less substituted carbon and –H to the more substituted carbon. The concerted nature requires the simultaneous addition of –H and –BH2 across the same face of the alkene giving syn...
8.1K
01:16Cycloaddition Reactions: Overview
2.5K
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.
2.5K