4つのダイナミックな共価反応が同時に起こる オートゴナリティの実験的証明
Helen M Seifert1, Karina Ramirez Trejo1, Eric V Anslyn1
1Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States.
Journal of the American Chemical Society
|August 16, 2016
まとめ
4つのダイナミックな共性反応は,同じ条件下で直交し,逆転することが判明した. 複雑な分子組成のプログラムされた形成を可能にします.
科学分野:
- 化学について
- 化学工学
- 材料科学
背景:
- ダイナミック・コバルント・ケミストリー (DCC) は,複雑な分子システムを作るのに不可欠です.
- 既存のDCC反応はしばしば交叉反応性があり,同時に使用することを制限する様々な条件を必要とします.
研究 の 目的:
- オートゴーナルで,同一条件下で機能するダイナミックな共性反応を特定し,特徴づけること.
- これらの直交反応の同時,単一のポットアプリケーションの実現性を実証します.
主な方法:
- リバーシビリティと互換性のために4つのダイナミックな共性反応を調査した.
- 交換実験のためにプロトン核磁気共鳴 ((1) H NMR) スペクトロスコーピーを利用した.
- 複雑な混合物を分析するために, (1) H NMRスペクトルの計算式分解を用いた.
主要な成果:
- 同一の条件下で逆行的に進行する4つのダイナミックな共性反応を特定した.
- この4つの反応の間には交叉反応がないことが示された.
- 光スペクトル分析により,単体混合物における独立反応の進行が確認された.
結論:
- 一つのポット合成に適したオートゴーナルダイナミック共性反応のセットを開発した.
- この直角性は 複雑な熱力学アセンブリの制御された プログラムされた形成を可能にします
- 超分子化学と 材料設計の先端的な応用への道を開く
さらに関連する動画
関連する概念動画
03:35Hybridization of Atomic Orbitals II
50.1K
sp3d and sp3d 2 Hybridization
50.1K
02:40MO Theory and Covalent Bonding
14.6K
The molecular orbital theory describes the distribution of electrons in molecules in a manner similar to the distribution of electrons in atomic orbitals. The region of space in which a valence electron in a molecule is likely to be found is called a molecular orbital. Mathematically, the linear combination of atomic orbitals (LCAO) generates molecular orbitals. Combinations of in-phase atomic orbital wave functions result in regions with a high probability of electron density, while...
14.6K
03:24Hybridization of Atomic Orbitals I
69.1K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
69.1K
01:31Diels–Alder vs Retro-Diels–Alder Reaction: Thermodynamic Factors
6.6K
The Diels–Alder reaction is thermally reversible, meaning that the reaction reverts to the starting diene and dienophile under suitable temperatures. The forward reaction gives a cyclohexene derivative and is favored at low to medium temperatures. The reverse process, also called retro-Diels–Alder reaction, is a ring-opening process favored at high temperatures.
6.6K
01:16Cycloaddition Reactions: MO Requirements for Thermal Activation
5.0K
Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
5.0K
02:15Homogeneous Equilibria for Gaseous Reactions
30.2K
Homogeneous Equilibria for Gaseous Reactions
For gas-phase reactions, the equilibrium constant may be expressed in terms of either the molar concentrations (Kc) or partial pressures (Kp) of the reactants and products. A relation between these two K values may be simply derived from the ideal gas equation and the definition of molarity. According to the ideal gas equation:
For gas-phase reactions, the equilibrium constant may be expressed in terms of either the molar concentrations (Kc) or partial pressures (Kp) of the reactants and products. A relation between these two K values may be simply derived from the ideal gas equation and the definition of molarity. According to the ideal gas equation:
30.2K