铜催化化胺的合成与终端基,硫酸和水
Seung Hwan Cho1, Eun Jeong Yoo, Imhyuck Bae
1Center for Molecular Design and Synthesis (CMDS), Department of Chemistry and School of Molecular Science (BK21), Korea Advanced Institute of Science and Technology, Daejon 305-701, Republic of Korea.
Journal of the American Chemical Society
|November 17, 2005
概括
这项研究引入了一种新的方法,用于合成N-硫胺使用终端基,硫酸和水. 这种高效的铜催化反应在温和条件下进行,为有价值的胺化合物提供了一条多功能途径.
科学领域:
- 有机化学 有机化学
- 催化剂是一种催化剂.
- 合成方法论 合成方法论
背景情况:
- N-硫胺是药物化学和材料科学中重要的功能组.
- 现有的合成途径往往需要恶劣的条件或专门的试剂.
- 开发用于合成N-硫胺胺的温和有效方法是非常可取的.
研究的目的:
- 开发一种新,高效和温和的N-硫氨基胺合成途径.
- 探索新反应的范围和局限性.
- 证明该方法的可扩展性和适应性.
主要方法:
- 铜催化液化合终端基和硫酸与水.
- 利用一种氨基基的温和反应条件.
- 研究了广泛的基质和功能组耐受性.
主要成果:
- 高产量的N-硫胺的高效合成.
- 对于基因和硫烯亚化物来说,已经证明了广泛的基质范围.
- 对各种可变的功能群体表现出耐受性,对终端基因具有很高的区域选择性.
结论:
- 开发的方法为N-硫氨基胺提供了一个简单和通用的方法.
- 反应是可扩展的,可以适应固相合成.
- 这项工作为有机合成提供了一个有价值的新工具.
相关概念视频
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Water: A Bronsted-Lowry Acid and Base
The reaction between a Brønsted-Lowry acid and water is called acid ionization. For example, when hydrogen fluoride dissolves in water and ionizes, protons are transferred from hydrogen fluoride molecules to water molecules, yielding hydronium ions and fluoride ions:
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As shown below, the mechanism involves a nucleophilic attack by water at the carbonyl carbon to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen π bond along with the departure of a halide ion. A final proton transfer step yields carboxylic acid...
As shown below, the mechanism involves a nucleophilic attack by water at the carbonyl carbon to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen π bond along with the departure of a halide ion. A final proton transfer step yields carboxylic acid...
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The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the generated carbocation,...
Acids, Bases and Neutralization Reactions
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