1,8-Ditriflated anthracene was prepared by an easy and straightforward approach that enables its reproducible synthesis on a 10 gram scale. Its symmetric/unsymmetric diethynylations by using the Sonogashira cross-coupling reactions were also demonstrated.
An iterative synthesis of a macrocycle with three 1,8‐anthrylene units (see picture, R=C6H13) was achieved by using Pd‐catalyzed cross‐coupling protocols, in which a copper‐free Sonogashira reaction was the key to the final cyclization. Photochemical model reactions suggest that the macrocycle has the potential to undergo photo‐induced [4+4] cycloaddition without undesired side reactions, which is
通过使用Pd催化的交叉偶联方案,可以实现具有三个1,8-蒽单元的大环的迭代合成(参见图片,R = C 6 H 13),其中无铜的Sonogashira反应是反应的关键。最终环化。光化学模型反应表明,大环化合物有可能发生光诱导的[4 + 4]环加成而没有不希望的副反应,这与创建2D聚合物的最终目标有关。