<i>N</i>-Bromosuccinimide-Induced C–H Bond Functionalization: An Intramolecular Cycloaromatization of Electron Withdrawing Group Substituted 1-Biphenyl-2-ylethanone for the Synthesis of 10-Phenanthrenol
作者:Ya-Ting Jiang、Zhen-Zhen Yu、Ya-Kai Zhang、Bin Wang
DOI:10.1021/acs.orglett.8b01160
日期:2018.7.6
intramolecular cycloaromatization for the synthesis of 10-phenanthrenols from electron-withdrawing groupsubstituted 1-biphenyl-2-ylethanones is described. The in situ generated bromide was designed to act as an initiator for the radical C–H bond activation. An oxidative cross-dehydrogenative coupling reaction of a highly active C–H bond with an inert C–H bond readily occurs under mild conditions without
No Fe‐ar: Iron catalyzes an imine‐directed CH bond activation to introduce an ortho‐aryl group to an acetophenone‐derived imine using a diarylzinc reagent (see scheme), whereas palladium catalyzes the conventional substitution reaction . The title reaction features mild and selective CH bond activation in the presence of aryl bromide, chloride, or sulfonate groups, and 1,2‐dichloroisobutane is essential
In this paper, we describe a novel N–O photolysis of o-nitrobenzyl oxime ethers that enables the synthesis of phenanthridines via intramolecular cyclizationreactions. Without the use of additional photocatalysts or photosensitizers, the process proceeds with an efficiency of ≤96% upon exposure of the sample to near-visible light (405 nm) under aqueous conditions. Through the photoinduced production
在本文中,我们描述了一种新型的邻硝基苄基肟醚的 N-O 光解,它能够通过分子内环化反应合成菲啶。在不使用额外的光催化剂或光敏剂的情况下,在水性条件下将样品暴露于近可见光 (405 nm) 时,该过程的效率≤96%。通过在 HeLa 细胞中光诱导产生荧光菲啶衍生物,证明了生物条件下反应的进展。这种光诱导环化反应可用作不同的光化学仪器,通过诱导生物活性分子的产生来控制生物过程。