A series of pyrenophanes was designed with the goal of providing kinetic stabilization to the bent pyrene system and, therefore, providing a means to generate more highly bent pyrene systems than ever before. Four members of this series were synthesized, isolated, and characterized. The lowest homologue was calculated to have a pyrene system that is just slightly less bent (θcalc = 106.8°) than the previous record holder for an isolated compound (θexpt = 109.2°). The next smaller member of the series was obtained as a minor component of a mixture with its direct synthetic precursor and a follow-on product after a 60 d reaction. Compelling MS and 1H NMR evidence was obtained for the formation of this compound; the pyrene system of which was calculated be extremely bent (θcalc = 130.4°).
一系列的吡啶并酮被设计出来,旨在为弯曲的芘系统提供动力学稳定性,从而提供一种生成比以往更弯曲的芘系统的方法。这个系列的四个成员被合成、分离和表征。计算得到,最低的同系物的芘系统比之前孤立化合物的记录保持者稍微不那么弯曲(θcalc = 106.8°,θexpt = 109.2°)。系列中较小的下一个成员作为与其直接合成前体和反应60天后的后续产物的混合物的次要成分获得。获得了令人信服的质谱和1H核磁共振证据表明形成了这种化合物;其芘系统被计算为极端弯曲(θcalc = 130.4°)。