1244549-87-8Relevant academic research and scientific papers
2-Ferrocenyl-substituted pyrylium ions from coupling of ethynylferrocene with cyclomanganated chalcones
Prasad, Narendra,Main, Lyndsay,Nicholson, Brian K.,McAdam, C. John
, p. 1961 - 1965 (2010/09/20)
2-Ferrocenyl-substituted pyrylium salts are produced when orthomanganated chalcones are reacted with ethynylferrocene in CCl4. When the reaction is carried out in benzene, intermediate ferrocenyl-substituted (η5-pyranyl)Mn(CO)3 species can be isolated which give the pyrylium cations on oxidation. The electrochemistry of the 2-ferrocenyl-pyrylium cations shows both oxidation (of the ferrocenyl) and reduction (of the pyrylium) processes, and the UV-visible spectra show a broad band at ca 680 nm which can be assigned to an intramolecular charge transfer transition. 2-Ferrocenyl pyrylium salts have been prepared from cyclomanganated chalcones and ferrocenylethyne.
