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- Title
Derivatives of the triaminoguanidinium ion, 7: unsymmetrically substituted N,N',N''-triaminoguanidinium salts via a cyclopentanone spiroaminal intermediate.
- Authors
Karger, Kerstin; Bechthold, Katharina; Maas, Gerhard
- Abstract
N,N′,N″-Triaminoguanidinium chloride (TAG-Cl) reacts with cyclopentanone or cyclohexanone to afford 8-(2-cyclopentylidenehydrazinyl)-6,7,9,10-tetraazaspiro[4.5]decan-8-ylium and 3-(2-cyclohexylidenehydrazinyl)-1,2,4,5-tetraazaspiro[5,5]undecan-3-ylium salts, respectively, i. e., two arms of the TAG ion were engaged in spiroaminal formation and the NH2 group of the third arm underwent imine-forming condensation. Ring-opening reactions of the cyclopentanone derived spiroaminal with aldehydes, aryl ketones, aromatic or aliphatic isocyanates give access to a variety of unsymmetrically substituted derivatives of the TAG ion.
- Publication
Zeitschrift für Naturforschung B: A Journal of Chemical Sciences, 2020, Vol 75, Issue 6, p517
- ISSN
0932-0776
- Publication type
Article
- DOI
10.1515/znb-2020-0004