84474-47-5Relevant academic research and scientific papers
Cyclopentadienylidenes, XVI. Condensation Reactions of Cycloheptapyrrol-6(2H)-one with Substituted Cyclopentadienes to Novel Pentadecaazafulvalenes
Seitz, Gunther,Olsen, Rolf A.,Kaempchen, Thomas
, p. 3756 - 3765 (2007/10/02)
Condensation of the cyclopentadienes 5, 12, and 14, activated by electron-attracting substituents, with cycloheptapyrrol-6(2H)-one 6 by heating in acetic anhydride yields deeply coloured, potentially dipolar 6?-10?-systems, the cyclopentadienylidene-cycloheptapyrroles 7, 13, and 15.Their constitutions are determined by 1H NMR; typical spectroscopic data, especially characteristics of the electronic spectra, are discussed.
