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