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相关概念视频

Preparation of Nitriles01:12

Preparation of Nitriles

2.1K
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...
2.1K
Preparation of Amines: Reduction of Oximes and Nitro Compounds01:29

Preparation of Amines: Reduction of Oximes and Nitro Compounds

3.7K
Oximes can be reduced to primary amines using catalytic hydrogenation, hydride reduction, or sodium metal reduction. The reduction of aliphatic and aromatic nitro compounds to primary amines takes place by either catalytic hydrogenation or by using active metals like Fe, Zn, and Sn in the presence of an acid.
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
3.7K
Nitrosation of Enols01:19

Nitrosation of Enols

3.0K
The nitrosation reaction is one of the methods of preparing 1,2-diketones. The enol tautomer of the starting ketone reacts with sodium nitrite in hydrochloric acid, generating the 1,2-diketone after hydrolysis.
3.0K
Preparation of Carboxylic Acids: Hydrolysis of Nitriles01:19

Preparation of Carboxylic Acids: Hydrolysis of Nitriles

4.4K
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.
4.4K
Nitriles to Carboxylic Acids: Hydrolysis01:08

Nitriles to Carboxylic Acids: Hydrolysis

3.9K
Nitriles undergo acid-catalyzed hydrolysis or base-catalyzed hydrolysis to form a carboxylic acid. These reactions proceed via an amide intermediate.
3.9K
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview01:26

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

3.3K
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...
3.3K

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相关实验视频

Updated: Jul 19, 2025

A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones
07:30

A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones

Published on: January 21, 2020

8.2K

使用氧化物进行有机合成.

Dirk Leifert1, Armido Studer1

  • 1Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster, Germany.

Chemical reviews
|August 14, 2023
PubMed
概括
此摘要是机器生成的。

氧化物是稳定的基因,在有机合成中具有多种应用,作为氧化剂,减少剂和基因终结剂. 它们在多个氧化状态中的独特反应性使它们成为化学家的宝贵工具.

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A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones
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A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones

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科学领域:

  • 有机化学 有机化学
  • 激进化学 激进化学是什么
  • 催化剂是一种催化剂.

背景情况:

  • 氧化物是稳定基 (R 1 R 2 N-O • ) 具有可调节的氧化还原特性.
  • 它们的稳定性来自于旋转分布和重的替代物,防止二元化.
  • 氧化物可以存在三种氧化状态:基,氧氨盐和离子.

研究的目的:

  • 审查氧化物在有机合成中的多功能应用.
  • 要突出它们作为氧化和还原反应中的催化剂和试剂的实用性.
  • 探索它们在极端化学中的作用,包括极端终结和生成.

主要方法:

  • 讨论氧化制剂,结构多样性和物理特性.
  • 检查由氧化物或它们的氧氨盐催化氧化反应.
  • 分析二氧化阳离子作为激素转化中的还原剂和胺.

主要成果:

  • 氧化物有效氧化各种功能组,包括酒精,氨基,乙烯酸盐和.
  • 它们作为有效的催化剂与终端氧化剂.
  • 氧化离子作为有价值的还原试剂.
  • 从氧化物中提取的氧胺使得可控的基因生成用于合成.

结论:

  • 氧化物为各种有机转化提供了一个多功能平台.
  • 它们参与多个氧化状态的能力扩大了它们的合成效用.
  • 氧化物介导的基质化学为复杂分子合成提供了强大的策略,包括天然产品.