9,10-Disubstituted Octafluoroanthracene Derivatives via Palladium-Catalyzed Cross-Coupling
作者:John F. Tannaci、Masahiro Noji、Jennifer L. McBee、T. Don Tilley
DOI:10.1021/jo8017268
日期:2008.10.17
9,10-Dichlorooctafluoroanthracene (1) reacts with aryl boronic acids and terminal alkynes under palladium-catalyzed cross-coupling conditions to afford 9,10-diaryloctafluoroanthracenes (2a-e) and 9,10-dialkynyloctafluoroanthracenes (6a,b), respectively. Optical spectroscopy and cyclic voltammetry indicate that octafluoro-9,10-di(thiophen-2-yl)anthracene (2d) exhibits donor-acceptor character and a
9,10-二氯八氟蒽(1)在钯催化的交叉偶联条件下与芳基硼酸和末端炔烃反应,分别制得9,10-二氟六氟蒽(2a-e)和9,10-二炔五氟蒽(6a,b)。光谱和循环伏安法表明,八氟-9,10-二(噻吩-2-基)蒽(2d)表现出给体-受体特性,相对于真空的LUMO能级为-3.27 eV。通过用NBS溴化2d,可以高收率获得官能化的5-溴噻吩-2-基衍生物(2e)。八氟-9,10-双[((三甲基甲硅烷基)乙炔基]蒽(6a)的X射线晶体分析表明,固态结构模仿了柱状液晶的堆积,八氟蒽芯之间的π堆积距离为3.39 A 。此外,八氟-9