在贝塔化物中进行反应性中间封闭,以有效地氧化α-olefins的有氧氧化
Ziyu Zhou1,2, Kun Zhang1,2, Peng He1,3,2
1State Key Laboratory of Coal Conversion Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, P. R. China.
Angewandte Chemie (International ed. in English)
|December 11, 2024
概括
石的限制增强了使用分子氧的长链线性α-olefins (LAOs) 的Mukaiyama环氧化. 这种绿色化学方法实现了高环氧化物选择性 (>95%) 和改善的化物效率,优于现有的催化剂.
科学领域:
- 催化剂是一种催化剂.
- 绿色化学 绿色化学
- 材料科学 材料科学 材料科学
背景情况:
- 长链线性α-olefins (LAOs) 的高效转化为环氧化物对于工业应用至关重要.
- 穆卡伊亚马环氧化提供了使用分子氧的有希望的途径,但受到低选择性和化物效率的影响.
- 现有的同质和异质催化剂在大规模的LAO环氧化中存在局限性.
研究的目的:
- 开发一种高选择性和高效的方法,用于使用Mukaiyama条件进行LAO环氧化.
- 调查热带石封闭在控制环氧化途径和改善催化剂性能方面的作用.
- 为了提高对以石为局限的反应机制的理解,以提高LAO的价值.
主要方法:
- 使用Beta焦化物作为纳米反应器,在环氧化过程中限制反应中间体.
- 将锡 (Sn) 位点纳入贝塔化石框架,以激活化物辅基质.
- 采用分子氧作为唯一氧化剂用于LAO的环氧化.
主要成果:
- 通过化物封闭实现了超过95%的环氧选择性.
- 将阿尔代的消耗量降至1.5个等价物,显著提高了效率.
- 与最先进的同质和异质催化剂相比,证明了卓越的性能.
- 具有Sn功能化的β-烯酸酸盐通过增加乙氧基度加速了环氧化动力学.
结论:
- 石封闭提供了一种有效的策略来引导Mukaiyama环氧化途径,提高选择性和效率.
- Sn-Beta 焦化物提供了一种绿色和高效的催化系统,用于使用分子氧的LAO环氧化.
- 这项研究提供了对催化剂设计的基本见解,以改善LAO的价值化.
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