CuCl
<sub>2</sub>
‐Mediated Oxidative Intramolecular α‐Arylation of Ketones with Phenolic Nucleophiles via Oxy‐Allyl Cation Intermediates
作者:Takuto Mochimatsu、Yusuke Aota、Taichi Kano、Keiji Maruoka
DOI:10.1002/asia.202001032
日期:2020.11.16
α‐Functionalization of ketones in an umpolung fashion can be achieved by nucleophilic addition to the oxy‐allyl cation intermediate. However, applicable carbon nucleophiles are limited to ones with high nucleophilicity. Additionally, introduction of a leaving group to the α‐position of ketone substrates is required beforehand. Herein, we report the CuCl2‐mediated oxidative intramolecular α‐arylation
酮的α-官能化可以通过亲核加成到氧基烯丙基阳离子中间体中来实现。但是,适用的碳亲核试剂限于亲核性高的亲核试剂。另外,事先需要在酮底物的α位上引入一个离去基团。在本文中,我们报告了通过酮的α-氯化作用以及随后生成的氧烯丙基阳离子中间体,将具有较少亲核酚类部分的酮的CuCl 2介导的氧化性α-芳基化为碳亲核体,得到了具有季碳中心的酮α位置。