吸引力非共价相互作用在化物宏循环中的作用
Diego B Diaz1, Rozhin Rowshanpour2, George J Saunders1
1Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada.
The Journal of organic chemistry
|January 13, 2024
概括
这项研究揭示了 (N-isocyanoimino) triphenylphosphorane (Pinc) 如何通过预先组织线性前体来促进的宏环化,从而导致刚性循环并防止副作用.
科学领域:
- 有机化学 有机化学
- 合成化学 合成化学
- 药用化学 医学化学
背景情况:
- 宏观循环的效率取决于前体的形状预组织.
- 传统的方法面临着诸如离子配对和副作用反应 (二聚化/寡聚化) 等挑战.
- 非共价相互作用提供了一种减少宏循环化中的性惩罚的策略.
研究的目的:
- 为了研究 (N-isocyanoimino) triphenylphosphorane (Pinc) 在大环化中的作用.
- 了解Pinc如何促进构成形态刚性宏观循环的形成.
- 阐明Pinc驱动的宏循环化的机制和选择性.
主要方法:
- 使用 (N-isocyanoimino) triphenylphosphorane (Pinc) 进行的宏环化.
- 采用核磁共振 (NMR) 和密度函数理论 (DFT) 的研究.
- 分析了中间分离和异环依赖的选择性.
主要成果:
- ピン克通过将反应端拉近,形成刚性宏循环来促进循环.
- 观察到适度的二聚体选择性,归因于Pinc.的偏好的Si-facial添加.
- 机制是通过核友性基因 (thiazole, imidazole) 在修饰的中重定向的.
结论:
- 针驱动的宏循环化是一种有效的策略,用于产生多样化的循环分子.
- 了解Pinc的机制提供了对异环依赖性选择性的洞察力.
- 这项工作促进了新型异环形成的宏环化反应的发展.
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