Metal‐Free Synthesis of Benzothiophenes by Twofold C−H Functionalization: Direct Access to Materials‐Oriented Heteroaromatics
作者:Jiajie Yan、Alexander P. Pulis、Gregory J. P. Perry、David J. Procter
DOI:10.1002/anie.201908319
日期:2019.10.28
their ubiquity in nature and frequent use in organic electronic materials, benzothiophenes are highly sought after. Here we set out an unprecedented procedure for the formation of benzothiophenes by the twofold vicinal C-H functionalization of arenes that does not require metal catalysis. This one-pot annulation proceeds through an interrupted Pummererreaction/[3,3]-sigmatropic rearrangement/cyclization