An Anomalous Antiaromaticity That Arises from the Cycloheptatrienyl Anion Equivalent
An Anomalous Antiaromaticity That Arises from the Cycloheptatrienyl Anion Equivalent
复制标题
由环庚三烯基阴离子当量产生的异常反芳香性
DOI：
10.1002/ejoc.201800769
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
H. Yamada
中科院分区：
文献类型：
--
作者：
K. Uehara;P. Mei;T. Murayama;F. Tani;H. Hayashi;M. Suzuki;N. Aratani;H. Yamada
用简单的Suzuki-Miyaura偶联法制备了一种具有螺旋烯结构的azulene二聚体，在近红外区，由于有效的π膨胀，在900 nm处有吸收。新形成的七元环具有正的NICS(1)值，这是由反芳环庚三烯基阴离子结构引起的。
A fused azulene dimer with helicene‐like structure prepared by simple Suzuki–Miyaura coupling between naphthalene and azulene derivatives shows absorption in the near‐IR region up to 900 nm owing to the effective π‐expansion. The newly formed seven‐membered ring exhibits a positive NICS(1) value that arises from the antiaromatic cycloheptatrienyl anionic structure.