基于铁素的N-异环烯:单体烯甲基,胺,烯,以及含P的插入产品
Hannes L Jacob1, Nadine Weyer1, Michael Leibold1
1Institute of Chemistry, University of Kassel, Heinrich-Plett-Straße 40, 34132, Kassel, Germany.
Chemistry (Weinheim an der Bergstrasse, Germany)
|April 24, 2024
概括
两种稳定的基于铁素的N-异环烯被比较了它们的反应性. 由于电子因素,Dipp替代的烯表现出更高的反应性,使其能够与各种小分子发生反应.
科学领域:
- 有机金属化学 有机金属化学
- 化学 化学
- 铁素衍生品 铁素衍生品
背景情况:
- N-异环烯是多功能化合物,具有可调节的电子和硬质性质.
- 基于铁的烯具有独特的结构和电子特征,这是由于铁的骨干.
- 了解烯的反应性对于开发新的合成方法和材料至关重要.
研究的目的:
- 为了比较两个不同的基于铁素的N-异环烯的活性:fc[(N{B}) 2Si] (A) 和fc[(NDipp) 2Si] (B).
- 研究它们的反应途径与一系列小分子基质,包括元素,硫,,亚酸盐和.
- 阐明控制观察到的反应性差异的电子和固态因素.
主要方法:
- 合成和表征基于铁素的N-异环力烯A和B的合成和表征.
- 涉及P4,S8,Se8,MesN3和各种基的反应的比较反应性研究.
- 谱学分析 (NMR,X射线晶体学) 用于确定产品结构和反应机制.
主要成果:
- 与1,3,2-diazaborolyl替代的同源 (A) 相比,Dipp替代的烯 (B) 显示出更高的反应性和更大的矛盾性.
- 在温和的条件下,这两种西莱与梅西酸 (MesN3) 反应形成相应的西兰胺,表明电子控制而不是硬质控制.
- 乙烯易于与素形成较重的类同类物 (乙烯,乙烯,乙烯) ,而乙烯则产生与元素硫和的不特定产品混合物,尽管可以实现类同类物的选择性形成.
结论:
- 电子效应在决定研究的基于铁的烯之间的反应性差异方面比硬质阻碍更为重要.
- 用Dipp替代的烯 (B) 是合成含化合物的更具反应性和多用途的构建模块.
- 这项研究提供了关于基于铁的N-异环烯在有机化学中的合成实用性的宝贵见解.
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