2,1,3-Benzothiadiazole Dimers: Preparation, Structure, and Transannular Electronic Interactions of<i>syn</i>- and<i>anti</i>-[2.2](4,7)Benzothiadiazolophanes
作者:Motonori Watanabe、Kenta Goto、Mamoru Fujitsuka、Sachiko Tojo、Tetsuro Majima、Teruo Shinmyozu
DOI:10.1246/bcsj.20100085
日期:2010.10.15
The cyclophanes comprised of two 2,1,3-benzothiadiazole (BTD) rings, anti- and syn-[2.2](4,7)benzothiadiazolophanes (anti-1 and syn-1), were prepared for the first time. The differences of the physical properties in the overlapping mode of the π-systems are clearly observed, and syn-1 shows much more significant transannular π-electronic interactions than anti-1 especially in the redox properties and the stability of the radical anion species.
首次制备了由两个 2,1,3-苯并噻二唑(BTD)环组成的环烷,即反-[2.2](4,7)苯并噻二唑环烷(反-1 和 syn-1)。与反-1 相比,合成-1 在氧化还原特性和自由基阴离子物种的稳定性方面表现出更为显著的跨annular π-电子相互作用。