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相关概念视频

Hydrolysis of Chlorobenzene to Phenol: Dow Process01:10

Hydrolysis of Chlorobenzene to Phenol: Dow Process

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Simple aryl halides do not react with nucleophiles under normal conditions. However, the reaction can proceed under drastic conditions involving high temperatures and high pressure to give the substituted products. For example, chlorobenzene is converted to phenol using aqueous sodium hydroxide at 350 °C under high pressure by the Dow process. The reaction follows an elimination-addition mechanism involving a benzyne intermediate. Here, the chloride ion is...
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The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
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Radical Substitution: Allylic Bromination01:27

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In organic synthesis, the formation of products can be altered by changing the reaction conditions. For example, a dibromo addition product is formed when propene is treated with bromine at room temperature. In contrast, propene undergoes allylic substitution in non-polar solvents at high temperatures to give 3-bromopropene. In order to avoid the addition reaction, the bromine concentration must be kept as low as possible throughout the reaction. This can be achieved using...
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Chlorination and bromination are important classes of electrophilic aromatic substitutions, where benzene reacts with chlorine or bromine in the presence of a Lewis acid catalyst to give halogenated substitution products. A Lewis acid such as aluminium chloride or ferric chloride catalyzes the chlorination, and ferric bromide catalyzes the bromination reactions. During the bromination of alkenes, bromine polarizes and becomes electrophilic. However, in the bromination of benzene, the bromine...
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An alkene, such as propene, reacts with bromine in the presence of water to yield a halohydrin. Halohydrins contain a halogen and a hydroxyl group attached to adjacent carbons. When the halogen is bromine, it is called a bromohydrin, while a chlorohydrin has chlorine as the halogen.
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Reactions at the Benzylic Position: Halogenation01:11

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Benzylic halogenation takes place under conditions that favor radical reactions such as heat, light, or a free radical initiator like peroxide.
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Updated: May 12, 2025

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3 - - --烯 - - 烯 - - 烯 - -

Marcel Sonneck1, Anke Spannenberg1, Sebastian Wohlrab1

  • 1Leibniz-Institut für Katalyse e V Albert-Einstein-Str 29a 18059 Rostock Germany.

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概括
此摘要是机器生成的。

这项研究详细介绍了3-chloro-propio-phenone的晶体结构,揭示了一个几乎平面的分子,侧链扭曲最小. 这种化合物不形成键,点为54°C.

关键词:
3 - - - - - - - - -晶体结构 晶体结构在β-基中.

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科学领域:

  • 有机化学 有机化学
  • 晶体学 晶体学是指结晶学.
  • 固态化学 固态化学

背景情况:

  • 3-chloro-propio-phenone是一种有机化合物,在合成中具有潜在的应用.
  • 了解其固态结构对于预测其化学行为和物理性质至关重要.

研究的目的:

  • 为了阐明3-chloro-propio-phenone的分子和晶体结构.
  • 描述固态中的形状偏好和分子间相互作用.

主要方法:

  • 使用单晶X射线衍射分析来确定分子和晶体结构.
  • 进行了扭转角和晶体包装的分析.

主要成果:

  • 3-chloro-propio-phenone的分子几乎是平面的,基侧链中的扭转角度非常小 (<6.3°).
  • 在晶格中没有观察到分子间的键.
  • 该化合物的点为54°C.

结论:

  • 3-chloro-propio-phenone的固态结构以平面形状和缺乏键的特征.
  • 这些结构特征影响其物理性质,例如点.