Palladium-Catalyzed C,N-Cross Coupling Reactions of 3<i>-</i>Halo-2-aminopyridines

Abstract

A simple approach toward N(3)-substituted-2,3-diaminopyridines is presented, based on Pd-catalyzed C,N-cross coupling. The use of RuPhos- and BrettPhos-precatalysts in combination with LiHMDS allows for C,N-cross coupling reactions of unprotected 3-halo-2-aminopyridines with primary and secondary amines.