Ortho-C–H and meta-C–H functionalization of arenes is well developed; however, para-C–H functionalization is more challenging. Now, a method for the synthesis of para-functionalized anilides from arylhydroxylamines and O- and S-nucleophiles is reported. The process uses fluorosulfuryl imidazolium triflates at low temperature and probably comprises O-fluorosulfonation, followed by N–O bond cleavage and nucleophilic addition.
- Zhenguo Xi
- Xi-Jia Liu
- Hongyin Gao
