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Synthesis of poly[(4,4′-(dihexyl)dithieno(3,2-b;2′,3′-d)silole)] and copolymerization with 3-hexylthiophene: new semiconducting materials with extended optical absorption

✍ Scribed by Boon, Florian; Hergué, Noémie; Deshayes, Gaëlle; Moerman, David; Desbief, Simon; De Winter, Julien; Gerbaux, Pascal; Geerts, Yves H.; Lazzaroni, Roberto; Dubois, Philippe


Book ID
120733398
Publisher
The Royal Society of Chemistry
Year
2013
Tongue
English
Weight
566 KB
Volume
4
Category
Article
ISSN
1759-9954

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## Reactions of 2,3-dihydro-4-oxo-thiopyrano[2,3-b] pyridine with aldehydes and with DMF-DMA furnished the 3-benzylidene and 3-(N,N-dimethylamino)-methylene derivatives. The latter products afforded spiro-pyrazolo-3,3 '-thiopyrano[2,3-b]pyridines and new tetra-and penta-heterocyclic ring systems