通过β-X消除启动的两性有机化物进行催化 σ-键解消
Hui-Qi Ni1, Jing-Cheng Dai1, Shouliang Yang2
1Department of Chemistry, The Scripps Research Institute, 10550 N Torrey Pines Road, 92037, La Jolla, CA, USA.
Angewandte Chemie (International ed. in English)
|June 12, 2023
概括
这项研究引入了一种新的催化方法,用于合成各种异环化合物. 该过程使用有针对性的C-H激活和取消,提供了一种直接的方式来创建复杂的分子.
科学领域:
- 有机化学 有机化学
- 催化剂是一种催化剂.
- 合成方法论 合成方法论
背景情况:
- 定向的C-H激活是形成C-C和C-异原子键的强大工具.
- 的催化提供了复杂分子合成的多功能反应性.
- 在药物化学中, (异环) 循环支架的高效构造至关重要.
研究的目的:
- 开发一种新型的催化级联反应,用于合成5和6个成员 (异质) 循环.
- 探索C(sp3) -H激活的范围和局限性,其次是β-异原子的消除和取消.
- 为了证明这种方法对修改氨基酸和转化异环的实用性.
主要方法:
- 催化级联序列涉及有针对性的C ((sp3) -H激活.
- 消除β-异原子,形成一个Pd{\displaystyle Pd{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{\displaystyle Pd}{2}}} 的中间体.
- 用两性烯化物进行氧中性无效.
主要成果:
- 选择性激活基C ((sp3) -氧,和硫键.
- 在取消步骤中具有很高的 diastereoselectivity.
- 成功地修改了氨基酸,并保留了对酶体的过剩.
- σ-结合环开/环闭变形的异环.
结论:
- 开发的方法为多样化 (异质) 环结构提供了多功能和高效的途径.
- 反应在操作上很简单,在简单的条件下进行.
- 这种方法对药物化学和复杂分子合成的应用具有前景.
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