Radical Trifluoromethoxylation of Arenes Triggered by a Visible‐Light‐Mediated N−O Bond Redox Fragmentation
作者:Benson J. Jelier、Pascal F. Tripet、Ewa Pietrasiak、Ivan Franzoni、Gunnar Jeschke、Antonio Togni
DOI:10.1002/anie.201806296
日期:2018.10.15
method enables non‐directed functionalization of C−H bonds on a range of substrates, providing access to aryl trifluoromethyl ethers. This light‐driven process is distinctly different from conventional procedures and occurs through an OCF3 radical mechanism mediated by a photoredox catalyst, which triggers an N−O bond fragmentation. The pyridinium‐based trifluoromethoxylation reagent is bench‐stable and
一种简单的三氟甲氧基化方法可以在一系列底物上实现CH键的非定向功能化,从而可以使用芳基三氟甲基醚。这种光驱过程与传统方法有明显不同,它是通过光氧化还原催化剂介导的OCF 3自由基机理发生的,该机理引发了N-O键断裂。基于吡啶鎓的三氟甲氧基化试剂具有台式稳定性,可通过操作简单的方式获得铅化合物的合成多样性。