Visible-Light-Induced Oxidative Generation of o-Quinone Methides for Inverse-Electron-Demand [4+2] Cycloaddition Reactions
作者:Kenta Tanaka、Yujiro Hoshino、Shoya Nohara、Suguru Iwai、Naoya Yamaguchi、Yosuke Asada、Yusuke Kamiyama、Yuta Tanaka
DOI:10.1055/a-2158-8648
日期:2023.12
Organophotoredox-catalyzed oxidative generation of o-quinone methides (o-QMs) for inverse-electron-demand [4+2] cycloaddition reactions has been developed. One-electron oxidation of 2-(sulfanylmethyl)phenols by thioxanthylium photoredox catalyst generated o-QMs, which reacted with various styrenes to produce chromanes with high regioselectivity. This reaction offers a valuable approach for in situ
已经开发出用于逆电子需求[4+2]环加成反应的有机光氧化还原催化氧化生成邻醌甲基化物(o -QMs)。硫代黄基光氧化还原催化剂对2-(硫烷基甲基)苯酚进行单电子氧化生成o -QMs,与各种苯乙烯反应生成具有高区域选择性的苯并二氢吡喃。该反应为在温和绿光照射下通过单电子氧化过程原位生成o -QMs提供了一种有价值的方法。