Nitrenium ion-based ipso-addition and ortho-cyclization of arenes under photo and iron dual-catalysis
作者:Miaofeng Ren、Xiaoyang Yan、Xiaojing Lai、Jin-Biao Liu、Hongwei Zhou、Guanyinsheng Qiu
DOI:10.1016/j.mcat.2022.112413
日期:2022.8
developed as an efficient acyl nitrenium ion precursor. An iron-catalyzed acyl nitrenium-based ipso-addition and ortho-cyclization of arenes under photocatalysis is reported for the switchable synthesis of 3,4-dihydroquinolin-2-ones and 6,9-diene-2,8-diones. In the reaction, FeCl3 serves as the photocatalyst and SET reductant, and an acyl nitrenium ion was proposed as a key intermediate. It is assumed that
在这项工作中,N-酰氧基苯甲酰胺被开发为一种高效的酰基氮鎓离子前体。报道了在光催化下基于铁催化的酰基硝基的ipso加成和芳烃的邻位环化,用于可转换地合成 3,4-dihydroquinolin-2-one 和 6,9-diene-2,8-diones。在该反应中,FeCl 3作为光催化剂和 SET 还原剂,提出了一个酰基氮鎓离子作为关键中间体。假设 ipso 加成和邻环化的差异是由底物上的取代基实现的。对位取代芳烃的反应主要通过ipso加成和 CC迁移,而间位取代芳烃的迁移通过邻环化进行。