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Preparation of Carboxylic Acids: Hydrolysis of Nitriles01:19

Preparation of Carboxylic Acids: Hydrolysis of Nitriles

4.7K
Nitriles (R–CN) can be converted into carboxylic acids (R–COOH) upon treatment with aqueous acids, i.e., upon hydrolysis of nitriles. Under base-catalyzed conditions, carboxylate anions (R–COO−) are formed.
4.7K
Structures of Carboxylic Acid Derivatives01:28

Structures of Carboxylic Acid Derivatives

2.9K
Structure of Carboxylic Acid Derivatives
Carboxylic acid derivatives contain an acyl group attached to a heteroatom such as chlorine, oxygen, or nitrogen. The carbonyl carbon and oxygen are both sp2-hybridized with an unhybridized p orbital.
The three sp2 orbitals of the carbonyl carbon form three σ bonds, one each with the carbonyl oxygen, the α carbon, and the heteroatom, whereas the other two sp2 orbitals of the carbonyl oxygen are occupied by the lone pairs. Further, the...
2.9K
Diazonium Group Substitution: –OH and –H01:19

Diazonium Group Substitution: –OH and –H

2.9K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
2.9K
Nitriles to Carboxylic Acids: Hydrolysis01:08

Nitriles to Carboxylic Acids: Hydrolysis

4.0K
Nitriles undergo acid-catalyzed hydrolysis or base-catalyzed hydrolysis to form a carboxylic acid. These reactions proceed via an amide intermediate.
4.0K
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview01:26

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview

3.5K
Nitrous acid and nitric acids are two types of acids containing nitrogen, among which nitrous acid is weaker than nitric acid. Nitrous acid with a pKa value of 3.37 ionizes in water to give a nitrite ion and the hydronium ion.
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by...
3.5K
Preparation of Nitriles01:12

Preparation of Nitriles

2.2K
One of the common methods to prepare nitriles is the dehydration of amides. This method requires strong dehydrating agents like phosphorous pentoxide or boiling acetic anhydride for converting amides to nitriles. Another reagent namely, thionyl chloride also accomplishes the dehydration of amides, where amide acts as a nucleophile. The first step of the mechanism involves the nucleophilic attack by the amide on the thionyl chloride to form an intermediate. In the next step, the electron pairs...
2.2K

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Preparation of N-2-alkoxyvinylsulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
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关于3基酸衍生物的进展

Meng-Lin Feng1, Zheng-Hui Li1,2, Bao-Bao Shi1,2

  • 1School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China.

Biomolecules
|August 28, 2025
PubMed
概括
此摘要是机器生成的。

3 - 酸 (3-NPA) 是一种模拟亨廷顿病和氧化应激的神经毒素. 它的衍生物具有多种生物活性,具有潜在的治疗应用.

关键词:
3-基酸衍生物抗病毒活性自然产品神经毒性药物学活动

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科学领域:

  • 生物化学
  • 神经科学
  • 药理学

背景情况:

  • 3 - 酸 (3-NPA) 是一种在真菌和植物中发现的神经毒性酸.
  • 它作为一种酸盐抗代谢物,抑制酸盐脱酶并破坏线粒体的氧化酸化.

研究的目的:

  • 系统地审查3-NPA衍生物的结构特征,生物活性和合成.
  • 为未来的研究和3-NPA衍生物的治疗应用提供见解.

主要方法:

  • 系统的文献审查.
  • 对3-NPA衍生物的结构特征,生物活性和化学合成的分析.

主要成果:

  • 3-NPA对于模拟诸如亨廷顿病之类的神经退行性疾病和研究氧化应激是一种有价值的工具.
  • 化3-NPA衍生物具有广泛的生物活性,包括神经毒性,抗病毒性,杀虫性,抗菌性和抗氧化性.

结论:

  • 由于其多样化的生物活性,3-NPA衍生物具有显著的治疗发展潜力.
  • 需要对3-NPA衍生物的结构-活性关系和合成进行进一步的研究.