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Chelucci, Giorgio Adolfo and Addis, Daniele and Baldino, Salvatore (2007) A New approach to the 1,10-phenanthroline core. Tetrahedron Letters, Vol. 48 (19), p. 3359-3362. ISSN 0040-4039. Article. Full text not available from this repository. DOI: 10.1016/j.tetlet.2007.03.073 AbstractA protocol for the synthesis of substituted 1,10-phenanthrolines is reported. The phenanthroline scaffold has been obtained constructing the central cycle starting from two pyridine rings. The method is hinged upon the intramolecular coupling of cis-1,2-di(2-bromo-3-pyridyl)ethenes that are in turn obtained from the Wittig reaction of 2-bromonicotinaldehydes with phosphonium salts prepared from 2-bromo-3-(bromomethyl)pyridines. Yields up to 75% have been obtained.
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