Strongly Reducing, Visible‐Light Organic Photoredox Catalysts as Sustainable Alternatives to Precious Metals
作者:Ya Du、Ryan M. Pearson、Chern‐Hooi Lim、Steven M. Sartor、Matthew D. Ryan、Haishen Yang、Niels H. Damrauer、Garret M. Miyake
DOI:10.1002/chem.201702926
日期:2017.8.16
Photoredox catalysis is a versatile approach for the construction of challenging covalent bonds under mild reaction conditions, commonly using photoredox catalysts (PCs) derived from precious metals. As such, there is need to develop organic analogues as sustainable replacements. Although several organic PCs have been introduced, there remains a lack of strongly reducing, visible-light organic PCs
光氧化还原催化是一种在温和的反应条件下构建具有挑战性的共价键的通用方法,通常使用衍生自贵金属的光氧化还原催化剂(PC)。因此,需要开发有机类似物作为可持续的替代物。尽管已经引入了几种有机PC,但仍然缺少强烈还原的可见光有机PC。在这里,我们建立了二氢吩嗪和吩恶嗪系统的关键光物理和电化学特性,从而使其能够成功用作三氟甲基化反应以及光氧还蛋白/镍催化的CN和CS交叉偶联的强还原可见光PC。历史上,这两种反应都是贵金属PC独有的。