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Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

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Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
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Nomenclature of Aryl and Heterocyclic Amines01:10

Nomenclature of Aryl and Heterocyclic Amines

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The simplest aromatic amine is phenylamine, which contains an –NH2 functionality directly attached to an aromatic ring. The name aniline is designated for this skeleton. As shown in Figure 1, the common names of the functionalized anilines involve prefixes ortho-, meta-, and para- to indicate the substitution position. Different functionalized aniline derivatives also have notable trivial names.
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EDTA: Auxiliary Complexing Reagents01:26

EDTA: Auxiliary Complexing Reagents

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EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
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Acid Halides to Ketones: Gilman Reagent01:14

Acid Halides to Ketones: Gilman Reagent

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Lithium dialkyl cuprate, also known as Gilman reagents, selectively reduces acid halides to ketones. The acid chloride is treated with Gilman reagent at −78 °C in the presence of ether solution to produce a ketone in good yield.
As shown below, the mechanism proceeds in two steps. First, one of the alkyl groups of the reagent acts as a nucleophile and attacks the acyl carbon of the acid chloride to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen...
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Preparation of Carboxylic Acids: Carboxylation of Grignard Reagents01:13

Preparation of Carboxylic Acids: Carboxylation of Grignard Reagents

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Carboxylic acids can be prepared by the carboxylation of Grignard reagents (RMgX). This method is convenient for converting alkyl (primary, secondary or tertiary), vinyl, benzyl, and aryl halides to carboxylic acids with one additional carbon than the starting RMgX.
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Torts III01:26

Torts III

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Types of Quasi-intentional Torts in Healthcare
Quasi-intentional torts in healthcare involve acts where intent is not directed to harm an individual but results in harm due to careless or reckless speech.
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関連する実験動画

Updated: Feb 10, 2026

Luminophore Formation in Various Conformations of Bovine Serum Albumin by Binding of GoldIII
08:26

Luminophore Formation in Various Conformations of Bovine Serum Albumin by Binding of GoldIII

Published on: August 31, 2018

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オーガノメタリックゴールド (III) システインアリレーション用反応剤

Marco S Messina1, Julia M Stauber1, Mary A Waddington1

  • 1Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States.

Journal of the American Chemical Society
|May 24, 2018
PubMed
まとめ

研究者らは,ペプチドとタンパク質を金 (III) 複合体を使って迅速かつ効率的に改造する方法を開発した. この新しい生物結合技術により,薬剤や光タグを含む様々な分子がシステイン残基に結合できます.

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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Synthesis of Protein Bioconjugates via Cysteine-maleimide Chemistry
09:14

Synthesis of Protein Bioconjugates via Cysteine-maleimide Chemistry

Published on: July 20, 2016

40.6K

関連する実験動画

Last Updated: Feb 10, 2026

Luminophore Formation in Various Conformations of Bovine Serum Albumin by Binding of GoldIII
08:26

Luminophore Formation in Various Conformations of Bovine Serum Albumin by Binding of GoldIII

Published on: August 31, 2018

7.3K
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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Synthesis of Protein Bioconjugates via Cysteine-maleimide Chemistry
09:14

Synthesis of Protein Bioconjugates via Cysteine-maleimide Chemistry

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科学分野:

  • 有機金属化学
  • 生物結合化学
  • 薬剤化学

背景:

  • システインの生物結合はペプチドとタンパク質の改変に不可欠です.
  • 既存の方法は,しばしば保護/無保護のステップまたは厳しい条件を必要とします.
  • 効率的で化学選択的な生物結合戦略の開発が必要である.

研究 の 目的:

  • 化学選択的なシステインアリレーションの効率的な方法を報告する.
  • 生物結合のために金 (III) オルガノメタリック複合体を利用する.
  • 保護されていないペプチドとタンパク質の修正を可能にします.

主な方法:

  • アリレーション反応のためにAu (III) オルガノメタリック複合体を用いること.
  • 周囲の温度と広範囲のpHの範囲で生物結合を行う.
  • 空気に安定したAu ((III) アリレーション反応剤のライブラリを合成する.

主要な成果:

  • 迅速な (< 5分) 化学選択型システインアリレーションが達成される.
  • 様々な分子:光染料,薬剤分子,親和性ラベル,PEGタグ,ステープルペプチドの成功結合が実証されています.
  • 安定した結晶型固体としての調製されたAu (III) アリレーション反応剤.

結論:

  • 開発された方法は,システインの生物結合のための多用途かつ効率的な経路を提供します.
  • 複雑な生物分子を改造するための合成の範囲を広げます.
  • 薬剤の配達とバイオマテリアルの開発のための有望な戦略を提供します.