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Abstract Site‐selective functionalization of C−H bonds in small complex molecules is a long‐standing challenge in organic chemistry. Herein, we report a broadly applicable and site‐selective aromatic C−H dibenzothiophenylation reaction. The conceptual advantage of this transformation is further demonstrated through the two‐step C−H 18 Ffluorination of a series of marketed small‐molecule drugs.
Xu et al. (2019) studied this question.