Anthriporphyrinoid and its dimeric homologues were synthesized by Suzuki–Miyaura coupling and subsequent oxidation. Both porphyrinoids were smoothly converted to their Pd^II complexes and were further decorated by Suzuki–Miyaura coupling with thiophene derivatives and subsequent oxidative fusion reaction to provide multiply fused compounds. Most Pd^II anthriporphyrinoids have been structurally well characterized to be planar for monomeric and helically twisted for dimeric species. The dimeric anthriporphyrinoids show paratropic ring currents due to their global antiaromatic networks, the extent of which increases with an increase of conjugated network. Multiply fused dimeric anthriporphyrinoids show helical structures, fully reversible six redox potentials, small HOMO–LUMO gaps, and absorption tails reaching in the near-infrared region, suggesting the high potential of this approach to explore molecular graphene. Optical separations of the dimeric helical species were accomplished, and racemization barrier heights were determined.

中文翻译：

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多重融合的 PdII 类卟啉化合物的自下而上合成

类卟啉及其二聚体同系物是通过 Suzuki-Miyaura 偶联和随后的氧化合成的。两种卟啉类化合物均顺利转化为其 Pd ^II配合物，并通过 Suzuki-Miyaura 与噻吩衍生物的偶联和随后的氧化聚变反应进一步修饰，以提供多重稠合化合物。大多数 Pd ^II类卟啉在结构上已被很好地表征为单体的平面和二聚体的螺旋扭曲。二聚类蒽卟啉由于其全局反芳香网络而显示出副热带环电流，其程度随着共轭网络的增加而增加。多重融合的二聚类蒽卟啉显示出螺旋结构、完全可逆的六个氧化还原电位、小的 HOMO-LUMO 间隙和到达近红外区域的吸收尾，表明这种方法在探索分子石墨烯方面具有很高的潜力。完成了二聚螺旋物质的光学分离，并确定了外消旋势垒高度。