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Correspondence
1,7-Diaza[12]annulene Derivatives? 100-Year-Old Pyridinium Salts!
Article first published online: 28 NOV 2007
DOI: 10.1002/anie.200704704
Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Issue
Angewandte Chemie International Edition
Volume 46, Issue 48, pages 9152–9153, December 10, 2007
Additional Information
How to Cite
Christl, M. (2007), 1,7-Diaza[12]annulene Derivatives? 100-Year-Old Pyridinium Salts!. Angew. Chem. Int. Ed., 46: 9152–9153. doi: 10.1002/anie.200704704
Publication History
- Issue published online: 5 DEC 2007
- Article first published online: 28 NOV 2007
- Manuscript Received: 11 OCT 2007
- Abstract
- Article
- References
- Cited By
Keywords:
- heterocycles;
- 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 diaza[12]annulenes 1, although they are nothing but N-substituted pyridinium salts.