Ruthenium‐Catalyzed C7 Amidation of Indoline CH Bonds with Sulfonyl Azides

A ruthenium-catalyzed direct C7 amidation of indoline CH bonds with sulfonyl azides was developed. This procedure allows the synthesis of a variety of 7-amino-substituted indolines, which are useful in pharmaceutical. The good functional tolerances, as well as the mild conditions, are prominent feature of this method.