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Synthesis 1999; 1999(5): 815-820
DOI: 10.1055/s-1999-3481
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An Effective Route to Polysubstituted Symmetric Terpyridines

I. Sasaki* , J. C. Daran, G. G. A Balavoine
  • *Laboratoire de Chimie de Coordination, UPR 8241, 205, route de Narbonne, 31077 Toulouse Cedex, France; Fax +33 61 55 30 03; E-mail: sasaki@lcc-toulouse.fr
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Publication Date:
31 December 1999 (online)

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A very simple and efficient method for the synthesis of symmetric polymethylated terpyridines in good yields is reported. It is based on the condensation of a bis-pyridinium iodide, with α,β-unsaturated aldehydes and ammonium acetate in formamide. The bis-pyridinium iodide was prepared from commercially available 2,6-diacetylpyridine, with iodine in pyridine.

terpyridines - enamines - polyaza heterocycles