<i>Meta</i>-Dehydrogenative Alkylation of Arenes with Ethers, Ketones, and Esters Catalyzed by Ruthenium
作者:Gang Li、Yuan Gao、Chunqi Jia、Shichong Wang、Bingxu Yan、Yu Fang、Suling Yang
DOI:10.1021/acs.orglett.0c02698
日期:2020.11.20
meta-dehydrogenative alkylation of arenes with cyclic ethers, ketones, and esters catalyzed by ruthenium is achieved in the presence of a di-tert-butyl peroxide (DTBP) oxidant. Interestingly, when quinoline and isoquinoline are employed as the directing group, or a chain ether as alkylation reagent, the system produces Minisci reaction products. Mechanistic study indicates that meta-dehydrogenative alkylation is a
甲元与环醚,酮,和由钌催化的酯芳烃的烷基化-dehydrogenative以二-的存在下实现的叔丁基过氧化物(DTBP)的氧化剂。有趣的是,当将喹啉和异喹啉用作导向基团,或将链醚用作烷基化试剂时,该系统产生Minisci反应产物。机理研究表明,间脱氢烷基化是由DTBP在C Ar -Ru键的邻/对指导作用的辅助下引发的自由基过程。