ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Cyclopentadienylidenes, XVI. Condensation Reactions of Cyclohepta[c]pyrrol-6(2H)-one with Substituted Cyclopentadienes to Novel PentadecaazafulvalenesCondensation of the cyclopentadienes 5, 12, and 14, activated by electron-attracting substituents, with cyclohepta[c]pyrrol-6(2H)-one 6 by heating in acetic anhydride yields deeply coloured, potentially dipolar 6π-10π-systems, the cyclopentadienylidene-cyclohepta[c]pyrroles 7, 13, and 15. Their constitutions are determined by 1H NMR; typical spectroscopic data, especially characteristics of the electronic spectra, are discussed.
Notes:
Die durch elektronenziehende Substituenten aktivierten Cyclopentadiene 5, 12 und 14 lassen sich mit Cyclohepta[c]pyrrol-6(2H)-on 6 durch Erhitzen in Acetanhydrid zu den tieffarbigen, potentiell dipolaren 6π-10π-Systemen, den Cyclopentadienyliden-cyclohepta[c]pyrrolen 7, 13 und 15 kondensieren. Deren Konstitution wird durch 1H-NMR-Untersuchungen bestimmt, typische spektroskopische Daten, besonders das charakteristische Absorptionsverhalten in Elektronenspektren, werden diskutiert.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19821151208
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