Reactions between 1-Ethynylazulenes and 7,7,8,8-Tetracyanoquinodimethane (TCNQ): Preparation, Properties, and Redox Behavior of Novel Azulene-Substituted Redox-Active Chromophores
作者:Taku Shoji、Shunji Ito、Kozo Toyota、Takeaki Iwamoto、Masafumi Yasunami、Noboru Morita
DOI:10.1002/ejoc.200900539
日期:2009.9
Cycloaddition/cycloreversion reactions between TCNQ and mono- or bis[2-(azulen-1-yl)ethynyl]benzene or -thiophene derivatives were examined: the corresponding TCNQ adducts, novel azulene-substituted redox-active chromophores, were produced in excellent yields. TCNE/TCNQ double adducts were also prepared both by stepwise and by one-pot cascade reactions. The redox behavior of these novel azulene-substituted
[2+2] TCNQ 与单或双[2-(azulen-1-yl)ethynyl]苯或-噻吩衍生物之间的环加成/环回复反应:相应的TCNQ加合物、新型azulene取代的氧化还原活性发色团,以优异的产量生产。TCNE/TCNQ 双加合物也通过逐步和一锅级联反应制备。通过循环伏安法 (CV) 和微分脉冲伏安法 (DPV) 检查这些新型薁取代发色团的氧化还原行为。通过可见光谱法观察到在电化学还原条件下这些薁取代的发色团的显着颜色变化。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)