Benzobischalcogeno[3,2-c]quinolines: Tuning Electronic and Structural Properties with Group 16 Elements [data]

Chalcogen-substituted π-extended indolocarbazoles were synthesized through a nucleophilic cyclization of tethered diynes with sulfur, selenium or tellurium sources, followed by a Pictet–Spengler reaction. These combined synthetic strategies enabled the facile access to heptacyclic π-extended molecules, offering a broad modularity at various stages of the synthesis route. In total, twenty-six novel heptacyclic compounds were synthesized. Their photophysical and structural properties were investigated experimentally as well as theoretically.

硫族元素取代的π扩展吲哚并咔唑类化合物，可通过锚定双炔与硫、硒或碲源的亲核环化反应，随后经皮克特-斯彭格勒（Pictet–Spengler）反应合成得到。该联合合成策略可便捷制备七环π扩展分子，且在合成路径的多个阶段展现出优异的模块化可调性。本研究共合成26种全新七环化合物，并通过实验与理论结合的方式对其光物理与结构性质开展了系统研究。