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3-Pyridinecarboximidamide gave with alkylating agents quaternary salts (2), that rearrange on addition of anionic base to 2-amino-pyridinecarbaldehyde (3). Derivatives of 3 can be obtained by reaction of 3-cyano-pyridinium salts with primary amine on addition of anionic bases

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Untersuchungen an quartären Pyridiniumsalzen, IX [1] Pyridiniumsalze mit Amidingruppe. Darstellung und Reaktion mit Base / Investigations of Quaternary Pyridinium Salts, IX [1] Pyridinium Salts with Amidine Group. Preparation and Reaction with Base