Rapid Access to γ,γ‐Dichloroketones <i>via</i> Radical‐Induced Dichloromethylation and Concomitant 1,2‐Aryl Migration of Allylic Alcohols with CHCl<sub>3</sub>
作者:Jiantao Zhang、Weiming Zhu、Peng Zhou、Cui Chen、Xianwei Li、Weibing Liu
DOI:10.1002/adsc.202300828
日期:2023.11.21
A radical-induced dichloromethylation and concomitant 1,2-aryl migration of allylic alcohols with CHCl3 is developed for the construction of γ,γ-dichloroketones in moderate to good yields. We found that, for the para-substituted unsymmetrical substrates, the more electron-deficient aryl group migrates preferentially over the more electron-rich aryl group. Moreover, chlorocyclopropanes could be obtained
Visible-light-induced 1,2-alkylarylation of alkenes with a-C(sp3)–H bonds of acetonitriles involving neophyl rearrangement under transition-metal-free conditions
An efficient visible-light-induced difunctionalization of alkenes with a-C(sp3)–H bonds of nitriles is described for the constructing of diverse 5-oxo-pentanenitriles under transition-metal-free conditions. This protocol proceeds via the functionalization of C(sp3)–H bond and radical addition/intramolecular 1,2-aryl migration processes, which features a wide scope of substituted α,α-diaryl allylic