nondirected amidation reaction of aromatic C–H bond was developed under iron(II) catalysis, using sulfonyl azides as the nitrogen source. The reaction displayed a broad substrate scope and good regioselectivities in the aspects of aromatic ring vs alkyl chain and different aromatic position of (alkyl)arenes. This method provided a new protocol for the synthesis of some aromatic amines, which were hard
Substituted anilines containing a sulfonyl group may be oxidized in situ in the presence of methanol and a hypervalentiodinereagent to form an active iminium species. Subsequent addition of phosphines or phosphites in the same pot produces meta-substituted anilines in good yields. This formal C–H bond functionalization is a direct and efficient means of selectively substituting the meta-position