F for fast: The perfluorinated solvent C6F14 is the key to a new variant of the Balz–Schiemann reaction for the synthesis of fluorinated arenes. Triazenes are converted into fluoroarenes under mild conditions on a support and in solution (see scheme). The method is straightforward and inexpensive, and yields previously difficult‐to‐prepare fluoroarenes in high purity.
快速反应的F:全氟化溶剂C 6 F 14是Balz-Schiemann反应新变体(用于合成氟化芳烃)的关键。在温和的条件下,将三氮烯在载体和溶液中转化为氟代芳烃(参见方案)。该方法简便易行且价格便宜,并且可以产生以前难以制备的高纯度氟代芳烃。
Synthesis of triazene-substituted homoconjugated push-pull chromophores by formal [2 + 2] cycloadditions
作者:Kübra Erden、İpek Savaş、Cagatay Dengiz
DOI:10.1016/j.tetlet.2019.06.046
日期:2019.7
building blocks for branched dendrimer syntheses, were utilized as a new type of electron-donor component in formal [2 + 2] cycloadditions. The click-type, atom-economic reactions proceed efficiently under ambient conditions without any catalyst. The resulting products are structurally interesting push-pullchromophores and were investigated in the context of optoelectronic properties using UV/Vis spectroscopy