Copper‐Catalyzed N1 Coupling of 3‐Aminoindazoles and Related Aminoazoles with Aryl Bromides

A coupling between 3-aminoindazoles and aryl bromides, selectively occurring at the N1 position, was developed using copper catalysis. The transformation allows the use of a variety of heterocycles for both coupling partners and provides rapid access to arylated aminoazoles of high interest in drug discovery.