In Situ Synthesis of Hexakis(alkoxy)diquinoxalino[2,3-<i>a</i>:2‘,3‘-<i>c</i>]phenazines: Mesogenic Phase Transition of the Electron-Deficient Discotic Compounds
作者:Chi Wi Ong、Su-Chih Liao、Tsu Hsing Chang、Hsiu-Fu Hsu
DOI:10.1021/jo035840l
日期:2004.4.1
2,3,8,9,14,15-Hexakis(alkoxy)diquinoxalino[2,3-a:2‘,3‘-c]phenazines with alkyl side chains varying from 6 to 12 carbon atoms were readily synthesized by the condensation of hexaketocyclohexane with the respective 1,2-bisalkoxy-4,5-diaminobenzene. Polarization microscopy and DSC studies showed all these compounds to exhibit a very wide mesophase range of over 150 °C. An interesting Dhd to Drd transition
通过缩合反应很容易合成2,3,8,9,14,15-烷基侧链为6至12个碳原子的六(烷氧基)二喹喔啉[2,3- a:2',3'- c ]吩嗪六酮环己烷与各自的1,2-双烷氧基-4,5-二氨基苯。偏振显微镜和DSC研究表明,所有这些化合物的中间相范围都超过150°C。通过X射线衍射测量确定,辛基衍生物3b观察到有趣的D hd到D rd跃迁。己基衍生物显示出三个还原电位,这表明HATN核保持了其电子不足的特性,并被认为适合作为n掺杂的盘状液晶材料。六个烷氧基链的合并并没有覆盖HATN核心的电子缺乏。