5298-71-5Relevant articles and documents
Enamine-functionalized oligopyridines as convenient intermediates for the synthesis of carbaldehyde derivatives
Viau, Lydie,Sénéchal, Katell,Maury, Olivier,Guégan, Jean-Paul,Dupau, Philippe,Toupet, Lo?c,Le Bozec, Hubert
, p. 577 - 583 (2003)
A series of enamine-substituted bipyridine, biquinoline and o-phenanthroline chromophores has been synthesized and fully characterized. The para regioselectivity of the functionalization is discussed on the basis of 2D NOESY correlation and X-ray diffraction analysis. Absorption and emission spectroscopic studies allow a comparison of the acceptor strength of the heterocyclic core (biquinoline > phenanthroline > bipyridine). These enamine derivatives are key intermediates for a straightforward preparation of the corresponding dicarbaldehyde-bisimine compounds.