100124-66-1Relevant academic research and scientific papers
Gold-Catalyzed Direct Alkynylation of Azulenes
Székely, Anna,Péter, áron,Aradi, Klára,Tolnai, Gergely L.,Novák, Zoltán
, p. 954 - 957 (2017)
A novel catalytic method for the direct C-H alkynylation of azulenes is developed. The gold catalyzed functionalization of this special carbacycle is achieved with hypervalent iodonium reagent TIPS-EBX under mild reaction conditions. With the aid of the developed procedure, several TIPS alkynylated azulene derivatives were synthesized bearing important functional groups for further functionalization.
Synthesis and electrochemical properties of carbocyclic and heterocyclic diazulenylethenes
Dragu, Eugenia Andreea,Nica, Simona,Tecuceanu, Victorita,Bala, Daniela,Mihailciuc, Constantin,Hanganu, Anamaria,Razus, Alexandru C.
, p. 6601 - 6610 (2013)
An efficient two-step method was 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 24 and 25, respectively, by oxidation with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). The electrochemical properties of compounds 15-17, 24 and 25 were examined by cyclic voltammetry (CV) and differential pulse voltammetry (DPV), and the relationship between their structure and electrochemical behavior was established. Novel 1,2-di(azulen-1-yl)ethenes, having the double bond included in a five-membered carbocyclic or heterocyclic ring, were conveniently synthesized by McMurry coupling reactions. Their electrochemical properties were examined by cyclic voltammetry (CV) and differential pulse voltammetry (DPV), and the electrochemical behavior-structure relationship was established. Copyright
