Facile Synthesis of Thienoacenes via Transition-Metal-Free Ladderization
2021
Feofanov, Mikhail | Akhmetov, Vladimir | Takayama, Ryo | Amsharov, Konstantin Yu
Herein, we report a facile transition-metal-free approach to sulfur-containing heteroacenes from fluorinated oligophenylenes. Unlike most existing methods, the presented approach is not restricted to simple dibenzothiophene derivatives and thus appears to be a useful tool for the synthesis of extended sulfur-containing heteroacenes. The incorporation of sulfur is unambiguously preprogrammed via the positions of fluorines in the precursors, allowing the selective synthesis of extended thienoacenes with up to 96% yield.
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