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相关概念视频

Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene01:13

Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene

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Bromination and chlorination of aromatic rings by electrophilic aromatic substitution reactions are easily achieved, but fluorination and iodination are difficult to achieve. Fluorine is so reactive that its reaction with benzene is difficult to control, resulting in poor yields of monofluoroaromatic products. To address this, Selectfluor reagent is used as a fluorine source in which a fluorine atom is bonded to a positively charged nitrogen.
6.0K
Valence Bond Theory02:45

Valence Bond Theory

32.3K
Overview of Valence Bond Theory
32.3K
Electron Affinity03:07

Electron Affinity

35.5K
The electron affinity (EA) is the energy change for adding an electron to a gaseous atom to form an anion (negative ion).
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Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

999
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.
999
Hybridization of Atomic Orbitals II03:35

Hybridization of Atomic Orbitals II

32.3K
sp3d and sp3d 2 Hybridization
32.3K
Halogens03:01

Halogens

18.5K
Group 17 elements, known as halogens, are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine a solid. Astatine is a highly unstable radioactive element, so currently, most of its properties are unknown due to its short half-life. Tennessine is a synthetic element also predicted to be in this group. 
18.5K

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相关实验视频

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Application of Elemental Lanthanides in the Selective C-F Activation of Trifluoromethylated Benzofulvenes Providing Access to Various Difluoroalkenes
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一种有机铜 (III) 化物触发C-CF3 键形成

Daniel Joven-Sancho1, Andrea Echeverri2, Nathalie Saffon-Merceron3

  • 1Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA), Université Paul Sabatier, CNRS, 118 Route de Narbonne, 31062, Toulouse, France.

Angewandte Chemie (International ed. in English)
|December 26, 2023
PubMed
概括

稳定的铜 (III) 化物复合物被合成和表征. 这些铜 (III) 中介物使碳-三甲基键的形成成为可能,从而产生有价值的三甲基化因,用于药物发现和农业化学.

关键词:
2e− 氧化还原序列化物 化物 化物高性铜 高性铜反应机制 反应机制三甲基化三化.

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科学领域:

  • 有机金属化学 有机金属化学
  • 化学 的化学
  • 催化剂是一种催化剂.

背景情况:

  • 铜 (III) 中间体对于交叉合反应至关重要,但通常不稳定.
  • 需要稳定的铜 (III) 化物复合物来探索它们的催化潜力.

研究的目的:

  • 合成和描述第一个稳定的铜 (III) 化物复合物.
  • 研究铜化物在造碳-三甲基键中的实用性.
  • 为了阐明三甲基化的机制.

主要方法:

  • 通过添加化物和化银处理合成铜 (III) 复合物.
  • 使用核磁共振 (NMR) 光谱,单晶X射线衍射 (Sc-XRD) 和元素分析 (EA) 的表征.
  • 机械研究涉及探头,理论计算,中间陷和激进测试.

主要成果:

  • 第一个稳定的铜 (III) 化物[PPh4][CuIII (CF3) 3F] (2) 已成功合成.
  • 综合体2有效形成C-CF3键,使用基基.
  • 机理学研究显示,形成铜 (III) 乙化物,经过还原性淘汰产生三甲基化基.

结论:

  • 稳定的铜 (III) 化物复合物可以合成和表征.
  • 这些复合物是合成三甲基化基因的有效催化剂.
  • 该机制涉及铜 (III) 乙化物中间体和还原性消除,为药物发现和农业化学提供了宝贵的合成子.