Synthesis and Electrochemical Properties of Carbocyclic and Heterocyclic Diazulenylethenes
作者:Eugenia Andreea Dragu、Simona Nica、Victorita Tecuceanu、Daniela Bala、Constantin Mihailciuc、Anamaria Hanganu、Alexandru C. Razus
DOI:10.1002/ejoc.201300354
日期:2013.10
developed for the synthesis of 1,2-di(azulen-1-yl)ethenes 15-17, having the double bond included in a five-membered carbocyclic or heterocyclic ring. The method involves preparation of the appropriate diketone precursors through Vilsmeier-Haack or Friedel-Crafts reactions, followed by their McMurry cyclization. Alkenes 16 and 17 were quantitatively converted into the corresponding dehydro derivatives
开发了一种有效的两步法合成 1,2-di(azulen-1-yl) 乙烯 15-17,其双键包含在五元碳环或杂环中。该方法包括通过 Vilsmeier-Haack 或 Friedel-Crafts 反应制备合适的二酮前体,然后进行 McMurry 环化。通过用 2,3-二氯-5,6-二氰基-1,4-苯醌 (DDQ) 氧化,烯烃 16 和 17 分别定量转化为相应的脱氢衍生物 24 和 25。通过循环伏安法(CV)和微分脉冲伏安法(DPV)检测了化合物15-17、24和25的电化学性质,并建立了它们的结构和电化学行为之间的关系。