Synthesis of 5,5′-diarylimino quinoidal 2,2′-bithiazoles
AuthorKoyioni, Maria G.
Koutentis, Panayiotis Andreas
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A Pd(0)-catalyzed double C-N coupling of 5,5′-dibromo-2,2′-bithiazoles with (het)arylamines and subsequent in situ Ag2O-mediated oxidation provides access to cross-conjugated quinoidal 5,5′-diarylimino-2,2′-bithiazoles in moderate to high yield. The highly colored quinoidal 2,2′-bithiazoles were studied by UV/vis spectroscopy, cyclic voltammetry and computational methods. © 2016 American Chemical Society.