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Solid-phase Synthesis of [4.4] Spirocyclic Oximes
Published on: February 6, 2019
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SmI2-Cyclopropyl Ketones的催化分子间合的计算研究:结构和反应性之间的联系
Song Yu1, Ciro Romano1, David J Procter1
1Department of Chemistry, School of Natural Sciences, The University of Manchester, ManchesterM13 9PL, U.K.
The Journal of organic chemistry
|October 22, 2024
概括
(II) 催化合环基和基因/基因有效地产生五个成员的环. 计算研究揭示了结构-反应性关系,指导了新型合成策略的设计.
科学领域:
- 有机化学 有机化学
- 催化剂是一种催化剂.
- 计算化学计算化学
背景情况:
- (SmI2) 催化合反应对于合成复杂的有机分子至关重要.
- 环基在基因介导的转化中提供独特的反应性概况.
- 了解结构-反应性关系对于优化合成方法至关重要.
研究的目的:
- 系统地研究烯或烯与环基的SmI2催化分子间合反应中的结构-活性关系.
- 阐明控制这些合反应的反应性和效率的因素.
- 为设计五环环结构的改进合成策略提供见解.
主要方法:
- 用密度函数理论 (DFT) 的计算来探索反应路径和能量障碍.
- 对关键中间体,过渡状态和激进稳定进行了分析.
- 通过比较不同环基基底物 (基,基,正基替代,双循环) 的反应性趋势.
主要成果:
- 烯基环基由于基稳定和环基碎片化而表现出增强的反应性,尽管存在左边中间障碍.
- 基环基具有较高的还原/碎片化障碍,但由于最小的硬质障碍,很容易捕捉激素.
- 整形替代的烯基环基通过结合和基质前扭曲的平衡表现出优越的反应性.
- 自行车[1.1.0] (BCB) 和自行车[2.1.0] (BCP) 基由于易碎裂和稳定的中间体,分别表现出增强的反应性.
结论:
- 该研究提供了对SmI2催化环基结合的详细计算理解.
- 反应性是由电子效应 (结合,基稳定) 和硬质因子调节的.
- 替代物效应和环应变显著影响反应效率.
- 这些发现为合理设计相关的催化反应和合成多样化的分子结构提供了宝贵的指导.
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