详尽地三化C1和C2构建块:超越米勒-罗霍直接过程
Isabelle Georg, Julian Teichmann, Markus Bursch1
1Mulliken Center for Theoretical Chemistry , Institut für Physikalische und Theoretische Chemie, Universität Bonn , Beringstrasse 4 , Bonn 53115 , Germany.
Journal of the American Chemical Society
|July 10, 2018
概括
六二 (Si2Cl6) 与离子的反应产生反应性中间体. 这些中间体可以转化为有价值的多化碳,使复杂的有机化合物的合成成为可能.
科学领域:
- 有机化学
- 合成无机化学
- 反应性中间体
背景情况:
- 在六二 (Si2Cl6) 中-键的异解是产生反应性物种的关键步骤.
- 了解这些中间体的反应性对于开发有机化学中的新合成途径至关重要.
研究的目的:
- 在Si2Cl6中研究Cl诱导的Si-Si键异解.
- 合成新型的多化碳及其衍生物.
- 探索这些中间体在构建复杂的有机分子中的合成实用性.
主要方法:
- 在CCl4或Cl2C=CCl2的存在下,Si2Cl6与离子的反应
- 产生的离子的质子化和氧化以形成化和.
- 光谱表征 (NMR,EPR) 和X射线衍射用于结构阐明.
主要成果:
- 实现了高基 [C(SiCl3) 3) - ([A]-) 和邻基 [(Cl3Si) 2C-C(SiCl3) 2) - ([B] 2-) 的产量.
- 从初级中间体中合成四乙烯 (H2B),四乙烯 (B),二乙烯 (C) 和三乙烯 (D).
- 基C的成功 [4+2] 循环添加反应产生复杂的多化芳香化合物 (E1,E2).
结论:
- Si2Cl6的Cl-诱导异解提供了一种通用途径,以合成有用的多化碳素.
- 产生的中间体作为多种类型的有机化合物的前体,包括替代的乙烯,乙烯和芳.
- 基于实验和计算数据提出了关键转换的可信反应机制.
相关概念视频
Movement Joints in Buildings
356
Movement joints in buildings are essential design elements that accommodate inevitable motions caused by various factors such as temperature changes, moisture content variations, and structural deflections. These motions, if not considered in design and construction, can lead to unsightly or dangerous damage. Movement joints are incorporated in different forms to manage these stresses and allow materials to move without causing distress.
The simplest type of movement joints, working joints, are...
The simplest type of movement joints, working joints, are...
356
Types of Building Stone
457
Building stones, essential materials for construction, are extracted from natural rock deposits and processed into specific forms and dimensions suitable for various building applications. These stones are broadly classified into three types based on their geological formation: igneous, sedimentary, and metamorphic.
Igneous rocks are formed from the solidification of magma or lava. An example is granite, known for its durability and resistance to weathering, making it ideal for parts of...
Igneous rocks are formed from the solidification of magma or lava. An example is granite, known for its durability and resistance to weathering, making it ideal for parts of...
457
Block Diagram Reduction
567
The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
567
Types of Building Separation Joints
631
Building separation joints divide large or complex building structures into smaller, discrete units that can move independently. These joints are categorized into three types: volume-change joints, settlement joints, and seismic separation joints.
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200...
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200...
631
Design Example: Sustainability in Concrete Building
424
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
424
Elements of Block Diagrams
715
Block diagrams serve as a visual representation of the input-output relationships within a system. An illustrative example is a heating system, where the set temperature activates the furnace to warm the room to the desired level. Block diagrams are versatile, modeling linear systems through Laplace transform variables and nonlinear systems using time domain variables.
A block diagram typically includes essential elements such as comparators, blocks, and feedback loops. Each of these elements...
A block diagram typically includes essential elements such as comparators, blocks, and feedback loops. Each of these elements...
715


