形C-H功能化使用PyridineN-Oxides作为H-原子抽象剂
Marcel Schlegel1, Siran Qian1, David A Nicewicz1
1Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States.
这项研究表明,可见光介导的化和未激活的C(sp3) -H键的异化,使用了阿克里催化剂和二烯N-氧化物. 该方法通过以氧为中心的基质中间体有效地功能化了多种不同的异质和异质芳香化合物.
科学领域:
- 有机化学 有机化学
- 光催化作用的光催化
- 在 C-H 功能化中.
背景情况:
- 在有机合成中,C(sp3) -H键的功能化仍然是一个重大挑战.
- 在温和条件下开发用于直接激活C-H的催化方法是非常可取的.
研究的目的:
- 开发一种新的方法,用于未激活的C(sp3) -H键的化和异化.
- 为了利用可见光光催化剂进行高效的C-H功能化.
主要方法:
- 使用一个阿克里迪尼光氧化催化剂.
- 使用氨酸N-氧化物作为原子转移 (HAT) 前体.
- 用可见光进行辐射.
主要成果:
- 成功化和异化三级,二级和初级C ((sp3) -H键.
- 作为关键中间体,生成以氧为中心的基因.
- 广泛的基质范围,包括多种异形C-H键和异质.
结论:
- 开发的方法为C ((sp3) -H功能化提供了一条有效的途径.
- 使用胺N-氧化物通过结构修改提供可调节的反应性.
- 这种光催化方法扩大了C-H激活策略的范围.
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