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Synthesis 2002(17): 2487-2489
DOI: 10.1055/s-2002-35620
DOI: 10.1055/s-2002-35620
SHORTPAPER
© Georg Thieme Verlag Stuttgart · New York
A Versatile Route to N,N′-(Peraryl)substituted 5,5′-Diamino-2,2′-bithiophenes
Weitere Informationen
Received
19 June 2002
Publikationsdatum:
20. November 2002 (online)
Publikationsverlauf
Publikationsdatum:
20. November 2002 (online)
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Abstract
The reaction of 5,5′-dibromo-2,2′-bithiophene with diarylamines in the presence of palladium acetate/tris-(t-butyl)phosphine as catalyst or by a titanium tetrachloride mediated oxidation of 2-(N,N-diarylamino)thiophenes has yielded a series of new N,N′-perarylated 5,5-diamino-2,2′-bithiophenes. These are electron-rich compounds with a low oxidation potential and have a high tendency to form amorphous glasses.
Key words
aminations - 5,5′-diamino-2,2′-bithiophenes - nucleophilic substitution - palladium catalysis - sulfur heterocycles
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