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