Ring fusion isomers of dithienoborepins: perturbations of electronic structure, aromaticity, and reactivity in boron-containing polycyclic heteroaromatics
作者:David R. Levine、Reid E. Messersmith、Maxime A. Siegler、John D. Tovar
DOI:10.1139/cjc-2016-0493
日期:2017.4
Through a combination of rational design and synthetic serendipity, two new structural isomers of the dithienoborepin (DTB) architecture have been realized. Unlike previous members of this family, these boron-containing polycyclic aromatics are unsymmetrical with respect to the fusion orientation of the central borepin and flanking thiophene rings. Characterization of the unsymmetrical dithienoborepins through
通过合理设计和合成意外的结合,已经实现了二噻吩并硼烷 (DTB) 架构的两种新的结构异构体。与该家族以前的成员不同,这些含硼多环芳烃在中心孔销和侧翼噻吩环的融合方向上是不对称的。通过光谱学、晶体学、电化学和计算方法对不对称二噻吩并硼烷的表征表明,电子学、芳香性和化学反应性在整个系列中可能存在细微差异(如 DTB 3)或显着不同(DTB 4),如每个结构中独特的 π 共轭的性质。三种最密切相关的 DTB 异构体(1、2、