294211-86-2Relevant articles and documents
Multi-functionalized 2,2′:6′,2″-terpyridines
Heller, Marcel,Schubert, Ulrich S.
, p. 751 - 754 (2007/10/03)
In this contribution, Stille-type cross-coupling procedure is shown to be an easy and universal way to prepare a variety of functionalized terpyridines. They may be functionalized in one step with different substituents at the outer pyridine rings and at
Functionalized 2,2′-bipyridines and 2,2′:6′,2″-terpyridines via stille-type cross-coupling procedures
Heller, Marcel,Schubert, Ulrich S.
, p. 8269 - 8272 (2007/10/03)
Stille-type cross-coupling procedures are utilized in order to prepare a variety of functionalized 2,2′-bipyridines and 2,2′:6′,2″-terpyridines. Such N-heterocyclic compounds are of great interest as chelating ligands for transitionmetal ions in the field of supramolecular chemistry. Various mono- and disubstitued 2,2′-bipyridines were synthesized in high yields and multigram scales using a modular design principle. The terpyridines may be functionalized in one step with different substituents at the outer pyridine rings and at the 4′-position of the centered ring, leading to multifunctionalized compounds. The initially obtained methyl ester and ethyl ester groups can be simply converted into bromomethyl and hydroxymethyl groups which allow further functionalization reactions.
Carboxylate derivatives of oligopyridines
Fallahpour, Reza-Ali
, p. 1138 - 1142 (2007/10/03)
The key compound ethyl 2,6-dibromopyridine-4-carboxylate was prepared in two steps starting from the commercially available citrazinic acid. By using the Stille coupling reaction ethyl 2,6- dibromopyridine-4-carboxylate was converted to 2,2'-bipyridines, 2,2':6',2''-terpyridines and 2,2':6',2'':6'',2''':6''',2''''- quinquepyridines which bear a carboxylate functional group directly attached to the central pyridine ring.
