通过氨基辅助的 [3 + 2] 循环添加,构建具有CF3-四元中心的1,3,4-oxadiazolines
Yannan Zhu1, Fang Bo2, Xuying Wang1
1Faculty of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China. yining.wang@ycit.cn.
Organic & biomolecular chemistry
|January 29, 2024
概括
研究人员开发了一种新合成的1,3,4-oxadiazolines与三甲基 (CF3) 组. 这些化合物显示出作为治疗头癌的潜力.
科学领域:
- 有机化学 有机化学
- 药用化学 医学化学
- 化学合成 化学合成
背景情况:
- 亚胺是有机化学中的多功能合成物.
- 三甲基化化合物经常表现出独特的生物特性.
- 1,3,4-Oxadiazolines是异环化合物的一类,具有多样化的应用.
研究的目的:
- 探索一种新的氨基辅助 [3 + 2] 循环添加策略.
- 为了合成具有CF3四分中心中心的功能化1,3,4-oxadiazolines.
- 评估合成化合物的潜在抗癌活性.
主要方法:
- 在烯胺和o-aminotrifluoroacetophenones之间采用 [3 + 2] 循环添加反应.
- 在温和反应条件下使用碳酸 (K2CO3) 作为基.
- 进行MTT测定以评估对癌细胞系的细胞毒性.
主要成果:
- 循环添加策略成功地提供了功能化的1,3,4-oxadiazolines.
- 合成实现了目标化合物的良好至优异产量.
- 合成的1,3,4-oxadiazoline衍生物在MTT测定中显示出治疗头癌的潜力.
结论:
- 建立了一种高效的氨基辅助循环添加方法来合成含CF3的1,3,4-oxadiazolines.
- 在三乙上存在的正氨基基团可能在循环化过程中起着关键作用.
- 新的1,3,4-oxadiazoline衍生物是进一步研究头癌治疗的有希望的候选人.
![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)
相关概念视频
01:16Cycloaddition Reactions: Overview
2.6K
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.
2.6K
01:16Cycloaddition Reactions: MO Requirements for Thermal Activation
3.6K
Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
3.6K
01:07Preparation 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
01:26Preparation of 1° Amines: Hofmann and Curtius Rearrangement Mechanism
3.5K
The Hofmann and Curtius rearrangement reactions can be applied to synthesize primary amines from carboxylic acid derivatives such as amides and acyl azides. In the Hofmann rearrangement, a primary amide undergoes deprotonation in the presence of a base, followed by halogenation to generate an N-haloamide. A second proton abstraction produces a stabilized anionic species, which rearranges to an isocyanate intermediate via an alkyl group migration from the carbonyl carbon to the neighboring...
3.5K
01:27Cyclohexenones via Michael Addition and Aldol Condensation: The Robinson Annulation
2.2K
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).
2.2K
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