Diverse synthesis of novel bisterpyridines via Suzuki-type cross-coupling

A new protocol is presented for the synthesis of novel bisterpyridine derivatives using palladium-catalyzed Miyaura- and Suzuki-type cross-couplings as the key reactions. This protocol is quick, efficient, mild, and broadly applicable for the construction of versatile bisterpyridines by symmetric and unsymmetric introduction of various substituents in the pyridine rings as well as by tuning the spacers for bridging the two terpyridine moieties.