在金属有机框架反应容器中保护无组选择性反应
Michael T Huxley1, Alexandre Burgun1, Hanieh Ghodrati1
1Department of Chemistry and Centre for Advanced Nanomaterials , The University of Adelaide , Adelaide , South Australia 5005 , Australia.
Journal of the American Chemical Society
|April 28, 2018
概括
这项研究引入了一个新的金属有机框架 (MOF) 战略,用于选择性有机合成. MOF精确地定位了亚离子,使得二基因能够选择性地转化为具有高产量的功能化三醇.
科学领域:
- 有机化学
- 材料科学
- 超分子化学
背景情况:
- 选择性有机转化对于合成复杂分子至关重要.
- 现有的方法往往缺乏复杂分子结构所需的精度.
- 金属有机框架 (MOF) 为催化应用提供可调节的环境.
研究的目的:
- 使用定制的MOF开发一个用于选择性地转化dialkynes成alkyne功能化的triazoles的策略.
- 通过精确定位亚离子来控制MOF的反应能力.
- 调查MOF内的选择性循环添加反应的机制.
主要方法:
- 合成一个定制的金属有机框架 (MOF),其中包括亚酸.
- 单晶X射线晶体学以表征MOF结构和反应中间体.
- 在MOF中进行 [3+2] 亚酸循环添加反应.
- 使用NMR光谱和质谱测量产品的特征.
主要成果:
- MOF使1,7-octadiyne-3,6-dione的选择性单点击反应成为可能,产生所需的三醇与最小的二醇形成.
- 在MOF通道内,X射线结晶学证实了反应性酸位的分离.
- MOF促进了单晶转化,允许逐步监测反应.
- 产品成功地从MOF中释放出来,再生出原材料.
结论:
- 设计的MOF可以作为选择性和化学选择性有机转换的有效平台.
- 在MOF道内反应性物种的精确空间排列是控制选择性的关键.
- 这种基于MOF的策略为高精度合成复杂分子提供了一种新方法.
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