Umpolung Strategy for Arene C−H Etherification Leading to Functionalized Chromanes Enabled by I(III)
<i>N</i>
‐Ligated Hypervalent Iodine Reagents
作者:Myriam Mikhael、Wentao Guo、Dean J. Tantillo、Sarah E. Wengryniuk
DOI:10.1002/adsc.202100809
日期:2021.11.9
The direct formation of aryl C−O bonds via the intramolecular dehydrogenative coupling of a C−H bond and a pendant alcohol represents a powerful synthetic transformation. Herein, we report a method for intramolecular arene C−H etherification via an umpoled alcohol cyclization mediated by an I(III) N-HVI reagent. This approach provides access to functionalized chromane scaffolds from primary, secondary
通过C-H键和侧醇的分子内脱氢偶联直接形成芳基C-O键代表了强大的合成转化。在此,我们报告了一种通过 I(III) N- HVI 试剂介导的 umpoled 醇环化进行分子内芳烃 C-H 醚化的方法。这种方法通过级联环化-碘盐形成从伯醇、仲醇和叔醇中获得官能化色满支架,后者为下游衍生化提供了通用的功能处理。计算研究支持通过 I(III) 配体交换初始形成 umpoled O-中间体,然后是竞争性直接和螺环化/1,2-转变途径。