作者:Simon Josef Siegfried Düsel、Burkhard König
DOI:10.1002/ejoc.201900411
日期:2020.3.15
Electron rich arenes are oxidatively photochlorinated in the presence of catalytic amounts of bromide ions, visible‐light and 4CzIPN as organic photoredox catalyst. The substrates are in situ brominated in a first photoredox‐catalyzed oxidation step, followed by a photocatalyzed ipso‐chlorination yielding the target compounds in high ortho/para regioselectivity. Dioxygen serves as a green and convenient
在催化量的溴离子、可见光和 4CzIPN 作为有机光氧化还原催化剂的存在下,富电子芳烃被氧化光氯化。底物在第一个光氧化还原催化氧化步骤中原位溴化,然后进行光催化同氯化,产生具有高邻位/对位区域选择性的目标化合物。双氧是一种绿色方便的末端氧化剂。盐酸水溶液作为氯化物源,减少了含盐副产品的数量。