Transition-Metal-Free Anti-Markovnikov Hydroarylation of Alkenes with Aryl Chlorides through Consecutive Photoinduced Electron Transfer
作者:Xudong Mao、Miao-Miao Li、Pengfei Wang、Qingzhi Cao、Wei Zhou、Wei Ding
DOI:10.1021/acs.orglett.4c00106
日期:2024.2.16
The hydroarylation of alkenes has emerged as a powerful strategy for arene functionalization. However, aryl chlorides remain a large challenge in this type of reaction due to the chemical inertness of the C(sp2)–Cl bond and high negative reduction potential. Herein, we report an anti-Markovnikov radical hydroarylation of alkenes with aryl chlorides via visible-light photoredox catalysis. The key reactive
烯烃的氢芳基化已成为芳烃官能化的强大策略。然而,由于C(sp 2 )–Cl键的化学惰性和高负还原电位,芳基氯在此类反应中仍然是一个巨大的挑战。在此,我们报道了通过可见光光氧化还原催化烯烃与芳基氯化物的反马尔可夫尼科夫自由基氢芳基化。通过连续的光诱导电子转移,可以从芳基氯中有效地获得关键的反应性芳基自由基。这种不含过渡金属的方案具有条件温和、底物范围广和官能团耐受性的特点,能够以中等至良好的收率产生多种线性烷基芳烃。建议该反应通过自由基-极性交叉途径进行。