多元组件反应的易斯酸金属有机框架的维度缩小
Xuanyu Feng1, Yang Song1, Wenbin Lin1
1Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States.
Journal of the American Chemical Society
|May 21, 2021
概括
一个新的2D金属有机框架 (MOF),Zr6OTf-BTB,可以有效地催化固体阻碍反应. 这种尺寸缩小策略克服了扩散的局限性,在复杂的有机合成中推进了多孔催化剂的应用.
科学领域:
- 材料科学
- 催化剂
- 有机化学
背景情况:
- 由于基质扩散障碍,多孔催化剂在复杂反应中面临限制.
- 金属有机框架 (MOF) 为催化提供可调节的多孔结构.
- 开发用于硬质要求高的MOF仍然是一个挑战.
研究的目的:
- 设计和合成一种具有增强基质可访问性的新型二维MOF催化剂.
- 调查2DMOF在硬质阻碍多组分反应 (MCR) 的催化性能.
- 建立基于Zr的易斯酸MOF的拓学-活动关系.
主要方法:
- 创建2D MOF (Zr6OTf-BTB) 的维度缩小策略.
- 使用pivalonitrile探测可访问的易斯酸性区域.
- 在MCR中对四基诺林和亚齐里丁碳酸盐合成的催化评估.
- 与3DMOF和同质催化剂 (Sc(OTf) 的比较3.
主要成果:
- Zr6OTf-BTB表现出96%可访问的易斯酸位,从而促进基板的访问.
- 在MCR方面,2D MOF显著优于3D MOF和Sc(OTf) 3,表现出更高的周转量 () 和催化剂寿命.
- 在高效率的MCR中使用Zr6OTf-BTB成功合成生物活性分子.
结论:
- 尺寸缩小是设计先进MOF催化剂的有效策略.
- 在受阻的有机转化中,Zr6OTf-BTB表现出卓越的催化活性.
- 这种方法扩大了MOF在复杂有机合成和药物发现中的应用范围.
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