SYNTHESIS AND PROPERTIES OF 7-(2,3-DIPHENYLCYCLOPROPENYLIDENE)-1,6-METHANO-2(7H)-[10]ANNULENONE. A [3.10]QUINAREN-5-ONE DERIVATIVE HAVING POLYOLEFINIC CHARACTER
作者:Kazuko Takahashi、Keiichi Ohnishi、Kahei Takase
DOI:10.1246/cl.1985.1447
日期:1985.10.5
The title quinarenone 2 in which the electron donating and electron accepting groups are located at the separate sites bisected by the 1,6-methano bridge, has been prepared. This compound has a preferable contribution of quinonoid resonance structure 2a to dipolar structure 2b in the ground state in order to maintain the weak conjugation between the two terminal chromophores, steming the C-1,6 overlap
已经制备了标题醌 2,其中给电子基团和受电子基团位于被 1,6-甲氧基桥一分为二的不同位点。该化合物具有醌式共振结构 2a 对基态偶极结构 2b 的优选贡献,以保持两个末端生色团之间的弱共轭,阻止 C-1,6 重叠。