An efficient method for the synthesis of 1H-indole-3-sulfonates via Palladium-catalyzed tandemreactions of 2-alkynyl arylazides with sulfonic acids has been developed. The desired products were obtained in good to excellent yields under mild reaction conditions. The reactions were shown to proceed very fast, in most cases, within 10 min.
Electrophilic indole? Indoles, which are typically nucleophilic, can be made electrophilic throughgoldcatalysis. By using an ortho‐azido group to deliver a nitrene intramolecularly, an arylalkyne is converted into a gold carbene intermediate containing an indole skeleton that is highly electrophilic at the 3‐position. A range of functionalized indoles is readily accessed by utilizing this strategy