Synlett 2015; 26(15): 2109-2116
DOI: 10.1055/s-0034-1378818
letter
© Georg Thieme Verlag Stuttgart · New York

Panchromatic Push–Pull Dyes of Elongated Form from Triphenylamine, Diketopyrrolopyrrole, and Tetracyanobutadiene Modules

Elodie Heyer
Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), Laboratoire de Chimie Organique et Spectroscopies Avancées (LCOSA), Université de Strasbourg/CNRS (UMR 7515), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 rue Becquerel, 67087 Strasbourg, France   eMail: ziessel@unistra.fr
,
Raymond Ziessel*
Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), Laboratoire de Chimie Organique et Spectroscopies Avancées (LCOSA), Université de Strasbourg/CNRS (UMR 7515), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 rue Becquerel, 67087 Strasbourg, France   eMail: ziessel@unistra.fr
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Publikationsverlauf

Received: 07. Mai 2015

Accepted after revision: 23. Juni 2015

Publikationsdatum:
29. Juli 2015 (online)


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Abstract

Several symmetrical and unsymmetrical thiophene-functionalized diketopyrrolopyrrole chromophores bearing a bis(p-methoxyphenyl)-p-phenylamine substituent were synthesized through palladium-catalyzed cross-coupling reactions. Mono-substitution and di-substitution occur using either alkyne or borolane groups, allowing the preparation of mixed systems. The alkyne derivatives could be prepared in high yields, and are versatile building blocks for the [2+2] cy­cloaddition of tetracyanoethylene, leading to 1,1,4,4-tetracyanobuta-1,3-diene derivatives. These interesting push–pull molecules exhibit a rich redox activity, which is understandable in light of the behavior of appropriate reference compounds. These innovative and rationally designed scaffolds are highly colored, exhibiting high absorption coefficients and spanning an absorption range of more than 600 nm of the UV/Vis electromagnetic spectrum.

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