contorted hexabenzocoronenes (HBCs) have been synthesized in a facile manner via Suzuki−Miyaura coupling of fluorinated phenyl boronic acids followed by photocyclization and Scholl cyclization. In addition to the molecular conformation observed in previous HBC derivatives, close-contact fluorine−fluorine intramolecular interactions result in a metastable conformation not previously observed. Heating the
氟化,扭曲的六苯并甲酮(HBC)通过
氟化苯
硼酸的Suzuki-Miyaura偶联,光环化和Scholl环化以一种简便的方式合成。除了在以前的HBC衍
生物中观察到的分子构象之外,紧密接触的
氟-
氟分子内相互作用还导致以前未观察到的亚稳态构象。将亚稳HBC加热至100°C以上不可逆地将其转变为稳定构象,这表明亚稳构象源自环化过程中的动力学停滞状态。