Pd-catalyzed, oxidant-promoted, chelation-assisted, regioselective direct ortho -nitration of 1-aryl-1 H -indazoles via

Herein, we developed a highly efficient palladium-catalyzed, oxidant-promoted, chelation-assisted, regioselective strategy to introduce the nitro group directly at the ortho -position of the pendant aryl ring of the 1-aryl-1 H -indazoles.