1,7-Diazaannulene Derivatives? 100-Year-Old Pyridinium Salts!
Article first published online: 28 NOV 2007
Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 46, Issue 48, pages 9152–9153, December 10, 2007
How to Cite
Christl, M. (2007), 1,7-Diazaannulene Derivatives? 100-Year-Old Pyridinium Salts!. Angew. Chem. Int. Ed., 46: 9152–9153. doi: 10.1002/anie.200704704
- Issue published online: 5 DEC 2007
- Article first published online: 28 NOV 2007
- Manuscript Received: 11 OCT 2007
- pyridinium salts
The 103-year-old reaction of N-(2,4-dinitrophenyl)pyridinium chloride with primary amines was rediscovered by two research groups recently. Since neither authors nor referees knew the pertinent literature, the products were assigned the structure of the diazaannulenes 1, although they are nothing but N-substituted pyridinium salts.