Abstract
The reaction of equimolar amounts of pyridoxal and 1,2-propylenediamine leads to the formation of monoimine, which exists as a cyclic imidazolidine tautomer. The latter reacts with aromatic aldehydes to form unsymmetric bisazomethines. The reaction of azomethine with phenylisocyanate produces a compound containing a carbamate group, and the reaction with hydrochloric acid leads to the formation of a salt-based furopyridine.
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ACKNOWLEDGMENTS
The authors are grateful to the Collective Spectro-Analytical Center for Physicochemical Studies of the Structure, Properties and Composition of Substances and Materials of the Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences” for technical support of the research.
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Translated from Zhurnal Obshchei Khimii, 2021, Vol. 91, No. 7, pp. 992–997 https://doi.org/10.31857/S0044460X21070027.
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Bagautdinova, R.H., Kibardina, L.K., Burilov, A.R. et al. Unsymmetrical Pyridoxal-Based Bisazomethines. Russ J Gen Chem 91, 1265–1270 (2021). https://doi.org/10.1134/S1070363221070021
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DOI: https://doi.org/10.1134/S1070363221070021