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Synthesis 2000; 2000(8): 1138-1142
DOI: 10.1055/s-2000-6331
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Carboxylate Derivatives of Oligopyridines

Reza-Ali Fallahpour*
  • *Institut für Anorganische Chemie, Universität Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland; E-mail: Reza.Fallahpour@unibas.ch
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Publication Date:
31 December 2000 (online)

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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 2,3-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.

terpyridine - bipyridine - carboxylates - Stille coupling reaction - palladium