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相关概念视频

Phase I Oxidative Reactions: Overview01:19

Phase I Oxidative Reactions: Overview

264
Phase I biotransformation, or functionalization, is a crucial chemical process that converts drugs and other xenobiotics into more water-soluble forms, facilitating expulsion from the body. It involves oxidative, reductive, and hydrolytic reactions that add or unveil polar functional groups on lipophilic substrates. Key players in phase I reactions are the mixed-function oxidases. Situated in liver cell microsomes, these enzymes predominantly carry out drug metabolism. They require molecular...
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Oxidative Cleavage of Alkenes: Ozonolysis01:46

Oxidative Cleavage of Alkenes: Ozonolysis

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In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
10.3K
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

10.1K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
10.1K
Phase I Reactions: Oxidation of Carbon-Heteroatom and Miscellaneous Systems01:15

Phase I Reactions: Oxidation of Carbon-Heteroatom and Miscellaneous Systems

88
Oxidative reactions are pivotal in metabolizing numerous compounds, including pharmaceutical drugs. These reactions often occur in carbon-heteroatom systems, such as carbon-nitrogen, carbon-sulfur, and carbon-oxygen.
In carbon-nitrogen systems, aliphatic and aromatic amines can undergo oxidative reactions. Secondary and tertiary amines, like those found in tricyclic antidepressants, can undergo N-dealkylation, a process that involves the oxidation of the alkyl group. In addition, oxidative...
88
Oxidation of Alcohols02:37

Oxidation of Alcohols

13.0K
In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
13.0K
Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate02:21

Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

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Alkenes can be dihydroxylated using potassium permanganate.  The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.
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相关实验视频

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Original Experimental Approach for Assessing Transport Fuel Stability
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开发实验室规模的连续动反应器,作为利用分子氧气进行氧化反应的流程工具.

Ursina Gnädinger1, Dario Poier1, Claudio Trombini2

  • 1Institute of Chemical Technology, Haute École d'Ingénierie et d'Architecture Fribourg, HES-SO University of Applied Sciences and Arts Western Switzerland, 1700 Fribourg, Switzerland.

Organic process research & development
|May 24, 2024
PubMed
概括

本研究介绍了一种3D打印的微型连续炉反应堆 (迷你CSTR),用于在有机化学中安全有效地使用分子氧 (O2). 新型反应堆设计增强了散热和气液混合,使可持续的化学合成成为可能.

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科学领域:

  • 化学工程是化学工程的重要组成部分.
  • 可持续化学 可持续化学
  • 过程强化 过程强化

背景情况:

  • 氧化反应在化学制造中至关重要,但通常依赖于产生大量废物的危险试剂.
  • 分子氧 (O2) 是一种可持续的氧化剂,但在有机溶剂中存在安全问题 (火灾/爆炸).
  • 开发更安全的O2利用方法对于绿色化学倡议至关重要.

研究的目的:

  • 为在有机合成中安全高效地应用分子氧 (O2) 开发一种新的微型连续动反应器 (mini-CSTR).
  • 解决与在外热反应中使用O2作为氧化剂相关的安全问题.
  • 为了证明反应堆在复杂的多相合成中的能力,与制药前体相关.

主要方法:

  • 利用最先进的3D打印技术制造了带有集成冷却的迷你CSTR.
  • 设计了高面积比和外套冷却,以实现卓越的散热.
  • 包含一个定制的磁顶单元和一个酸盐气体分散板,用于增强混合和气液接口.

主要成果:

  • 实现了外热氧化反应的安全运行,特别是2 - 乙醇氧化,提高了产品选择性.
  • 成功证明了反应堆在气体-液体-固体三相合成中对抗莱什曼药物的内氧化物前体的效用.
  • 验证了改进的效率和优化的气液质量转移.

结论:

  • 开发的迷你CSTR为利用O2作为有机化学中的可持续氧化剂提供了一个安全有效的平台.
  • 这种反应堆设计代表了绿色化学制造过程强化过程的重大进步.
  • 这项技术在可持续合成和制药中间产品生产中具有广泛应用的巨大潜力.