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関連する概念動画

Preparation of 1° Amines: Azide Synthesis01:22

Preparation of 1° Amines: Azide Synthesis

4.6K
Direct alkylation of ammonia produces polyalkylated amines, along with a quaternary ammonium salt. To exclusively prepare primary amines, the azide synthesis method can be used.
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
4.6K
Preparation of Amines: Alkylation of Ammonia and Amines01:30

Preparation of Amines: Alkylation of Ammonia and Amines

4.6K
Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation.
Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...
4.6K
Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview01:07

Preparation of 1° Amines: Hofmann and Curtius Rearrangement Overview

3.6K
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.
3.6K
Acid Halides to Amides: Aminolysis01:07

Acid Halides to Amides: Aminolysis

4.2K
Aminolysis is a nucleophilic acyl substitution reaction, where ammonia or amines act as nucleophiles to give the substitution product. Acid halides react with ammonia, primary amines, and secondary amines to yield primary, secondary, and tertiary amides, respectively.
In the first step of the aminolysis mechanism, the amine attacks the carbonyl carbon of the acyl chloride to form a tetrahedral intermediate. In the second step, the carbonyl group is re-formed with the elimination of a chloride...
4.2K
Preparation of Amines: Reductive Amination of Aldehydes and Ketones01:38

Preparation of Amines: Reductive Amination of Aldehydes and Ketones

3.7K
Carbonyl compounds and primary amines undergo reductive amination first to produce imines, followed by secondary amines in the same reaction mixture, using selective reducing agents like sodium cyanoborohydride or sodium triacetoxyborohydride. Reductive amination produces different degrees of substitution of amines depending on the starting amine substrate.
3.7K
Aldehydes and Ketones with Amines: Imine and Enamine Formation Overview01:16

Aldehydes and Ketones with Amines: Imine and Enamine Formation Overview

6.3K
Primary amines react with carbonyl compounds—aldehydes and ketones—to generate imines. Imines consist of a C=N double bond and are named Schiff bases after its discoverer—the German chemist Hugo Schiff. On the other hand, secondary amines react with carbonyl compounds to give enamines. In enamines, the presence of a C=C double bond adjacent to the nitrogen atom leads to the delocalization of the lone pair.
6.3K

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関連する実験動画

Updated: Jan 17, 2026

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
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Published on: July 28, 2022

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三次アミンとピリジンのクリック・トゥ・リリース反応

Konrad Chojnacki1, Tori Demuth2, Jenna Faulkner1

  • 1Department of Medicinal Chemistry, College of Pharmacy, 30 S 2000 E, Salt Lake City, Utah 84112, United States.

Journal of the American Chemical Society
|January 15, 2026
PubMed
まとめ

この研究は,化学生物学のツールを拡張する,三次アミンとピリジンのための新しいクリック-to-release反応を導入します. これらの新しい方法は,空間時間的な薬物投与のための機能群の制御された放出を可能にします.

さらに関連する動画

Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines
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Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines

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Preparation of N-2-alkoxyvinylsulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
10:42

Preparation of N-2-alkoxyvinylsulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines

Published on: January 3, 2018

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関連する実験動画

Last Updated: Jan 17, 2026

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
04:38

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions

Published on: July 28, 2022

3.4K
Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines
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Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines

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Preparation of N-2-alkoxyvinylsulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines
10:42

Preparation of N-2-alkoxyvinylsulfonamides from N-tosyl-1,2,3-triazoles and Subsequent Conversion to Substituted Phthalans and Phenethylamines

Published on: January 3, 2018

10.2K

科学分野:

  • 有機化学
  • 化学生物学
  • 薬物の配達

背景:

  • クリックして放出する反応は 生物学的プロセスを制御し 空間時間的な薬物の投与を可能にします
  • 現在の戦略では,放出可能な機能群の範囲が限られており,その適用が制限されています.

研究 の 目的:

  • 三次アミンとピリジンのための新しいクリック・トゥ・リリースの反応を開発する.
  • クリック・トゥ・リレーズ・ケミストリーの 放出可能なグループのレパートリーを拡大する
  • 化学生物学の新たな応用と 標的型薬物投与を可能にします

主な方法:

  • イソニトリルとテトラジンを用いた2つの直角生物対角戦略を開発した.
  • 三次アミンとピリジンをマスクするために,イソシアノプロピル (ICPr) とテトラジルメチル (TzMe) グループを使用する.
  • 反応メカニズムを明らかにするために実験的および計算的研究を行った.

主要な成果:

  • イソニトリルテトラジン反応を用いて,三次アミンとピリジンのクリック・トゥー・リリースが成功していることが実証された.
  • 三次性イソニトリルによって媒介されたTzMe群の予期せぬ放出経路が特定されました.
  • 様々な生物活性分子にマスク群を適用し,ゼブラフィッシュの胚に良好な安定性と生物対角性を示した.

結論:

  • クリック・トゥ・リリース・ケミストリーの 範囲を大幅に拡大します
  • 化学生物学と薬物投与における空間時間制御のための新しいツールを提供します.
  • 革新的な治療戦略と生物学的研究への道を開く.