Flow-Assisted Synthesis of [10]Cycloparaphenylene through Serial Microreactions under Mild Conditions
作者:Heejin Kim、Hyune-Jea Lee、Dong-Pyo Kim
DOI:10.1002/anie.201509748
日期:2016.1.22
flow‐assisted synthesis of [10]CPP in four steps under mild conditions. For the synthesis, a selective nucleophilic addition of the unprotected diketone without the double‐added byproduct was achieved within 3 s in high yield. Subsequently, the obtained compound was reacted with dilithiated benzene at 25 °C to form a U‐shaped precursor for CPP in a separate microreactor, which was finally dimerized and aromatized
环对亚苯基(CPP)被公认为是自底向上合成直径均匀的碳纳米管的有吸引力的模板,并且对于石墨以及环形大分子的化学作用至关重要。但是,即使在费时且费力的多步条件下,从卤代苯中报告的路线收率也很低。本文中,我们在温和条件下分四个步骤报告了[10] CPP的流辅助合成。对于合成,可以在3 s内以高产率实现无保护的二酮的选择性亲核加成,而没有双加的副产物。随后,将获得的化合物在25°C下与二锂化苯反应,在单独的微反应器中形成CPP的U形前体,然后将其二聚并芳构化,通过两步烧瓶内反应获得[10] CPP。