Regioconvergent Synthesis of a π‑Extended Tribenzotriquinacene-Based Wizard Hat-Shaped Nanographene

The successful enlargement of the curved π-electron periphery of the wizard hat-shaped polycyclic aromatic compound 1 is described. The target structure 2 features an m,m,p,m,m,p,m,m,p-nonaphenylene belt fused to a central tribenzotriquinacene unit. The synthesis involves a multiple regioconvergent Scholl-type dehydrocyclization as the key step. Spectroscopic, structural, and electronic properties of the title compound 2 are reported.

本文报道了巫师帽状多环芳烃化合物1的弯曲π电子外围的成功拓展。目标产物2具有如下结构特征：一条m,m,p,m,m,p,m,m,p-九联苯带状骨架与中心三苯并三喹吖烯（tribenzotriquinacene）单元稠合。该合成路线以多区域收敛型肖尔（Scholl）型脱氢环化反应作为关键步骤。本文报道了标题化合物2的光谱学、结构及电子性质。