|
Z. Naturforsch. 2014,
69b, 829 – 834
doi:10.5560/ZNB.2014-4086
The Reaction of Cyanamidium Salts with Ylidenecyanamide Derivatives
1 Chemistry Department, Al al-Bayt University, Mafraq, Jordan
2 Current address: Clinical Pharmacy, Albaha University, Albaha, Saudi Arabia
3 Chemistry Department, Albaha University, Albaha, Saudi Arabia
4 Faculty of Pharmacy & Medical Science, Hebron University, Hebron, Palestine
5 Institut für Organische und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
Reprint requests to R. Abu-El-Halawa. E-mail:
halawarajab@yahoo.com
Received April 20, 2014 / published online July 8, 2014
Dedicated to Professor J. C. Jochims
Cyanamidium salts 1 undergo ene reactions with ylidenecyanamide derivatives 5 to afford conjugated iminium salts 12. The N,N,N′-trialkylcyanamidium salts 1 react as the ene, and the ylidenecyanamide derivatives 5 react as the enophile components to form the 2-azoniaallene salts 11 followed by the formation of conjugated iminium salts 12 as cationic polynitrogen compounds with guanidine and amidine subgroups. The constitution of the new conjugated iminium salts 12 was secured by elemental analyses and spectroscopic data (IR and NMR).
Key words: Ene Reactions, Ylidenecyanamide, Cyanamidium Salts, 2-Azoniallenes, Iminium Salts