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基于聚氧甲酸盐的金属有机框架,具有质子酸和多氧化活性站点:高效的quinazolinones的催化合成
Yanli Yang1, Keke Guo2, Yifei Liu1
1Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P. R. China.
ACS applied materials & interfaces
|September 5, 2024
概括
新的基于聚氧甲的金属有机框架催化了quinazolinone的合成. 化合物3通过利用协同质子和多氧化位点表现出极好的活性,有效地达到99%的产量.
科学领域:
- 材料化学 材料化学
- 催化剂是一种催化剂.
- 有机合成 有机合成
背景情况:
- 基纳索林衍生物是重要的制药和农药中间体.
- 目前用于quinazolinones的合成方法由于专注于单个催化场所,因此具有较低的催化效率.
- 需要具有多个活性位点的新型催化剂来提高合成效率.
研究的目的:
- 合成基于聚氧甲酸盐的新型金属有机框架 (MOF),具有双质子和多氧化活性位点.
- 研究这些新MOFs在quinazolinone衍生物合成中的催化活性.
- 阐明反应机制,了解协同催化位点的作用.
主要方法:
- 合成了三种新的基于聚氧甲酸盐的MOF: [CuI4(4,4'-bipy) 7(HP Mo12-xVxO40) ]·2H2O (x = 1-3).
- 合成的MOF作为催化剂在quinazolinone衍生物的合成中的应用.
- 使用密度函数理论 (DFT) 计算,拉曼光谱和电子磁共振 (EPR) 来研究反应机制.
主要成果:
- 化合物3是合成的MOF之一,对quinazolinone合成表现出极好的催化活性.
- DFT的计算表明,质子将基胺凝结阶段的激活能量从55.1降至31.4kcal/mol.
- 拉曼和EPR研究证实了氧化脱过程中CuIIOO•和•O2−物种的存在,促进了中间消费.
结论:
- 合成的基于聚氧甲酸盐的MOF,特别是化合物3,是quinazolinone衍生物合成的高效催化剂.
- 质子和多氧化活性位点 (Cu ((I) 和V ((V)) 的协同作用对于增强的催化性能至关重要.
- 这项工作为设计高效催化剂提供了一种新策略,通过结合有机合成的多个活性场所.
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