Acetal Addition to Electron-Deficient Alkenes with Hydrogen Atom Transfer as a Radical Chain Propagation Step
作者:Wei Chuen Chan、Jincy K. Vinod、Kazunori Koide
DOI:10.1021/acs.joc.0c03044
日期:2021.2.19
We describe a visible-light-promoted addition of a hydrogen atom and an acetal carbon toward various electron-deficient alkenes. 1,3-Dioxolane is converted to its radical species in the presence of persulfate and an iridium catalyst upon visible light irradiation, which then reacts with electron-deficient alkenes. The reaction operates via a radical chain mechanism, a less commonly observed pathway
我们描述了氢原子和乙缩醛碳对各种缺电子的烯烃的可见光促进加成。1,3-二氧戊环在过硫酸盐和铱催化剂的存在下在可见光照射下转化为自由基基团,然后与缺电子的烯烃反应。该反应通过自由基链机制进行,而自由基链机制是这类转化中较不常见的途径。实验和密度泛函理论研究证实了氢原子从1,3-二氧戊环向α-丙二酸自由基的转移。