Photoinduced Remote C(sp<sup>3</sup>)–H Cyanation and Oxidation Enabled by a Vinyl Radical-Mediated 1,5-HAT Strategy
作者:Mengqi Luo、Shibo Zhu、Chengcheng Shi、Yunlong Du、Chao Yang、Lin Guo、Wujiong Xia
DOI:10.1021/acs.orglett.2c02523
日期:2022.9.16
1,5-hydrogen atom transfer (1,5-HAT) strategy for the remote C(sp3)–H functionalization reaction, which includes cyanation, oxidation, and etherification under visible-light-induced photochemical conditions. This reaction is achieved using readily available alkyl N-hydroxyphthalimide esters as radical precursors, which can efficiently react with diverse alkynes to form key vinyl radical intermediates
我们报告了一种乙烯基自由基介导的 1,5-氢原子转移 (1,5-HAT) 策略,用于远程 C(sp 3 )-H 官能化反应,包括可见光诱导光化学下的氰化、氧化和醚化条件。该反应是使用容易获得的烷基N-羟基邻苯二甲酰亚胺酯作为自由基前体来实现的,它可以有效地与各种炔烃反应形成关键的乙烯基自由基中间体,然后进行 1,5-HAT 工艺。该合成方案可以高效地构建一系列结构多样的具有优异立体选择性的γ-氰基、γ-羰基和γ-氧化烯烃。