Boron-Doped Tri(9,10-anthrylene)s: Synthesis, Structural Characterization, and Optoelectronic Properties
作者:Claas Hoffend、Frauke Schödel、Michael Bolte、Hans-Wolfram Lerner、Matthias Wagner
DOI:10.1002/chem.201202280
日期:2012.11.26
carrying phenyl (R=Ph), dimesitylboryl (R=Mes2B), or N,N‐di(p‐tolyl)amino (R=Tol2N) groups gave the corresponding 9,10‐dianthryl‐DBA derivatives 9–11 in moderate to good yields. In these molecules, all four solubilizing tert‐butyl groups are outward pointing. The solid‐state structures of 4, 5, 9, and 10 reveal twisted conformations about the exocyclic BC bonds with dihedral angles of 70–90°. A significant
9,10-二溴-9,10-二氢-9,10-二硼蒽蒽(9,10-二溴-DBA,3)与两个当量的9-lithio-2,6-或9-lithio-2的反应, 7-二叔丁基蒽生成了相应的9,10-二蒽基DBA,具有两个(4)或四个(5)内向叔丁基。由于绕环外BC键的旋转受阻,化合物4以两个阻转异构体4和4'的形式存在。X射线晶体学图5表明,面对的叔丁基之间的整体相互作用是吸引而不是排斥的。即使在解决方案中,4 /4′和5对空气和湿气稳定几个小时。用带有苯基(R = Ph),二聚三甲基叔丁基(R = Mes 2 B)或N,N- di(对甲苯基)氨基的10-硫代-9-R-2,7-二叔丁基蒽处理3(R =托尔2 N)基团,得到相应的9,10- dianthryl-DBA衍生物9 - 11在中度至良好的产率。在这些分子中,所有四个可溶解的叔丁基均朝外。的固态结构4,5,9,和10揭示了环外BC键的扭曲构