P-Aminovinyl ketones

Meanwhile, Nikolay had started his new research on the preparation, reactions, and synthetic applications of p-chloro vinyl ketones and related compounds (p-aminovinyl ketones, p-kctoacetals). Efficient synthetic methods were developed and improved, including C-ketovinylation (introduction of the RCOCH = CH group), and a number of useful heterocyclic compounds (pyrazoles, triazoles, pyridines, and so on) were synthesized. The discovery of enamine-imine tautomerism in p-aminovinyl ketones was another remarkable achievement by Nikolay at that time. For these studies he received in 1953 the degree of Doctor of Science in chemistry. He continued as a lecturer and supervisor of postgraduates at the University, becoming docent (associate professor) in 1951 and full professor in 1955. 

U. Dabrowski, Yu. A. Pentin, J. Dabrowski, V. M. Tatevskii, and N. K. Kochetkov, Tauto-merism investigation of alkyl p-aminovinyl ketones from infrared absorption spectra, Zh. Fiz. Khim., 32 (1958) 135-140. 

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