可见光光氧催化中的氧交换机:激素添加和循环以及意想不到的C-C-键裂解反应
Shaoqun Zhu1, Arindam Das, Lan Bui
1RWTH Aachen University, Institute of Organic Chemistry, Landoltweg 1, D-52074 Aachen, Germany.
Journal of the American Chemical Society
|January 22, 2013
概括
可见光光还原催化使三级氨基的新C-H功能化成为可能. 氧气作为一个开关,指导反应形成g-氨基烯酸或四基诺林衍生物.
科学领域:
- 有机化学 有机化学
- 光催化作用的光催化
- 合成方法论 合成方法论
背景情况:
- 三级胺是有机合成中的多功能构建块.
- C-H功能化为复杂分子提供了高效的路线.
- 可见光光还原催化剂提供了温和和可持续的反应条件.
研究的目的:
- 为了开发新的可见光光电还原催化三级氨基的C-H功能化反应.
- 探索氧气作为控制反应通路的化学开关的作用.
- 合成各种含氨酸的化合物,包括γ-氨基酸,四基诺林和醇.
主要方法:
- 可见光照射辐射的可见光辐射.
- 使用或复合体进行光电氧催化.
- N,N-二甲基-氨酸与烯的分子间和分子内反应.
- 控制引入氧气的控制引入.
主要成果:
- 开发了分子间C-H功能化,在没有氧气的情况下产生γ-氨基酸.
- 在氧气的存在下实现了基质添加/循环,产生四基诺林衍生物.
- 通过分子内反应观察到意想不到的 indole-3-carboxaldehyde衍生物的形成.
- 发现了一种新型的光电还原催化C-C键裂解机制.
结论:
- 证明了氧气作为光氧催化剂中切换器的实用性,用于控制产品形成.
- 建立了新的合成路径,以获得有价值的含氨酸的异环环.
- 提供了对光电还原介导的C-C键裂变的机制性见解.
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