Direct C4–H phosphonation of 8-hydroxyquinoline derivatives employing photoredox catalysis and silver catalysis
作者:Xiaoxue Su、Fan Yang、Yusheng Wu、Yangjie Wu
DOI:10.1039/c8ob00370j
日期:——
A simple and efficient protocol for the C4–H phosphonation of 8-hydroxyquinoline derivatives was developed under a photoredox/silver(I) cocatalysis system, providing a new approach to phosphonated 8-hydroxyquinoline derivatives. Note that the reaction did not occur at the C5 site, but regioselectively at an unusual C4 site. Moreover, the reaction proceeded smoothly under mild reaction conditions (a
在光氧化还原/银(I)助催化系统下,开发了一种简单而有效的8-羟基喹啉衍生物的C4-H膦化反应方案,为膦酸化的8-羟基喹啉衍生物提供了一种新方法。注意该反应不是在C5位点发生,而是区域选择性地在不寻常的C4位点发生。此外,反应在温和的反应条件(催化量的银盐和室温)下以良好的官能团相容性顺利进行。