1,1-Difluoronaphthalen-2(1H)-ones were used as building blocks for synthesis of functionalized fluorinated tetraphenones via Diels-Alder reaction. Two effective methods of tetraphenone reductive aromatization were proposed. Fully aromatic stable fluorinated tetraphene derivative with high solubility and HOMO-LUMO gap of 3.08 eV was obtained.

中文翻译：

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1,1-二氟萘-2（1 H）-1作为氟化四苯酚的构建基块

1,1-二氟萘-2（1 H）-1被用作通过Diels-Alder反应合成功能化氟化四苯酮的结构单元。提出了两种有效的四苯酮还原芳构化方法。获得具有高溶解度和3.08 eV的HOMO-LUMO间隙的完全芳族稳定的氟化四苯衍生物。