Benzo[e]pyrene Skeleton Dipyrylium Dication with a Strong Donor-Acceptor-Donor Interaction, and Its Two-Electron Reduced Molecule
作者:Koya Prabhakara Rao、Mio Kondo、Ryota Sakamoto、Tetsuro Kusamoto、Michihiro Nishikawa、Shoko Kume、Masayuki Nihei、Hiroki Oshio、Hiroshi Nishihara
DOI:10.1002/chem.201101708
日期:2011.12.9
structures similar to the aromatic benzo[e]pyrene‐type skeleton. [1,4‐Am2Pyl2](TFSI)2 could be reduced to give the neutral molecule [1,4‐Am2Pyl2]0, which is stable and maintains the benzo[e]pyrene‐type skeleton. To the best of our knowledge, this is the first oxygen‐atom‐containing polycyclic aromatic hydrocarbon with 22 (4n+2) π‐electrons. The obtained condensed‐ring benzo[e]pyrene‐type skeleton compounds show
供体-受体-供体(D–A–D)共轭分子1,4-双(二芳基氨基苯基乙炔基)蒽醌(1,4-Am 2 Aq)和1,4-双(二茂铁基乙炔基)蒽醌(1,4-Fc 2 Aq),与双(三氟甲烷砜)亚胺酸(TFSIH)进行双质子环化反应,生成1,4-双(二芳基氨基苯基或二茂铁基)二吡啶盐[1,4-R 2 Pyl 2 ](TFSI)2(R = Am或Fc)具有类似于芳族苯并[ e ] re型骨架的新颖平面五环结构。可以将[1,4-Am 2 Pyl 2 ](TFSI)2还原为中性分子[1,4-Am 2 Pyl 2 ] 0,它稳定并保留了苯并[ e ] re型骨架。据我们所知,这是第一个具有22(4 n +2)个π电子的含氧原子的多环芳烃。所获得的稠环苯并[ e ] py型骨架化合物的理化性质与具有1型骨架的[1,5-Am 2 Pyl 2 ](TFSI)2显着不同。