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相关概念视频

Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

5.1K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
5.1K
Phase II Reactions: Sulfation and Conjugation with α-Amino Acids01:19

Phase II Reactions: Sulfation and Conjugation with α-Amino Acids

465
Sulfation and α-amino acid conjugation are two critical biotransformation reactions in drug metabolism. Sulfation, a phase II biotransformation reaction, involves adding a polar sulfate group to a drug, enhancing its water solubility and promoting excretion. This process can either co-occur with or occur independently of glucuronidation. Nonmicrosomal sulfotransferase enzymes catalyze the process. The reaction involves 3'-phosphoadenosine-5'-phosphosulfate or PAPS coenzyme...
465
Electrophilic Aromatic Substitution: Sulfonation of Benzene01:22

Electrophilic Aromatic Substitution: Sulfonation of Benzene

6.6K
Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
6.6K
Sulfur Assimilation01:20

Sulfur Assimilation

80
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to...
80
Preparation and Reactions of Thiols02:33

Preparation and Reactions of Thiols

6.7K
Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
6.7K
Drug Metabolism: Phase II Reactions01:14

Drug Metabolism: Phase II Reactions

4.2K
Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...
4.2K

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相关实验视频

Updated: Sep 19, 2025

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
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Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Published on: April 9, 2018

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通过硫酸盐进行脱碳氧化硫化.

Zhen Xia1,2, Ting Deng1, Chunlan Song1

  • 1State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 China jkli@hnu.edu.cn.

Chemical science
|June 2, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的激素反应,用于直接从碳酸盐中合成有机硫酸盐,使用硫酸盐. 这种方法为传统的O-硫化提供了多功能替代方案,扩大了合成的可能性.

更多相关视频

Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene
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Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene

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Separation of Aldehydes and Reactive Ketones from Mixtures Using a Bisulfite Extraction Protocol
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Separation of Aldehydes and Reactive Ketones from Mixtures Using a Bisulfite Extraction Protocol

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相关实验视频

Last Updated: Sep 19, 2025

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
12:30

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework

Published on: April 9, 2018

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Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene
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Synthesis of Terpolymers at Mild Temperatures Using Dynamic Sulfur Bonds in PolyS-Divinylbenzene

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Separation of Aldehydes and Reactive Ketones from Mixtures Using a Bisulfite Extraction Protocol
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Separation of Aldehydes and Reactive Ketones from Mixtures Using a Bisulfite Extraction Protocol

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科学领域:

  • 有机化学 有机化学
  • 合成化学 合成化学
  • 药用化学 医学化学

背景情况:

  • 传统的O-硫化仅限于含有基的化合物.
  • 对于有机硫酸盐合成,需要一种新的断开连接策略.
  • 有机硫酸盐可以作为异体来改善代谢概况.

研究的目的:

  • 开发一种用于有机硫酸盐合成的直接脱碳硫化硫化方法.
  • 探索使用超硫酸盐作为氧化剂和硫酸盐来源.
  • 为了使碳酸能够用有机硫酸盐组替代碳酸.

主要方法:

  • 开发了一种基因介导的脱碳氧化硫化反应.
  • 人硫酸盐被用作双重作用的试剂 (氧化剂和O-O来源).
  • 反应通过C-O键形成和C-OSO3-键形成进行.

主要成果:

  • 从各种碳酸酸中实现了有机硫酸的直接合成.
  • 该方法克服了传统O-硫化方法的局限性.
  • 超硫酸盐有效地产生以碳为中心的基因,并促进硫化.

结论:

  • 通过直接脱碳硫化硫化合成有机硫酸盐的新和多功能方法已经建立.
  • 这种方法扩大了有机硫酸盐制备的范围.
  • 合成的有机硫酸盐具有作为药物发现的同位素的潜力.