Synthesis of 2,2 '-bipyridyl-type compounds via the Suzuki-Miyaura cross-coupling reaction

2,2'-Bipyridyl-type compounds may be prepared by Suzuki-Miyaura coupling of a 2-pyridylboronic ester with 2-haloazines and -azoles. Ten examples are presented with yields of 47 to 84%. Both arylbromides and arylchlorides undergo the coupling, but the reaction is sensitive to ring substitution adjacent to the halogen.