Journal of Organic Chemistry p. 2223 - 2226 (1994)
Update date:2022-08-10
Topics:
Beye, Norbert
Cava, Michael P.
The stable, crystalline 1,3-dibromo-4,6-dicyanothieno<3,4-c>thiophene (3a) has been synthesized.This is the first example of a thieno<3,4-c>thiophene stabilized solely by electronic effects.The dicarbomethoxy dibromo analog 3b and the tetrabromo analog 3c were also generated and found to be considerably less stable.
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