STUDY OF THE REACTIVITY OF THE METHYLENE HYDROGEN ATOMS OF SOME AZOLIDINES. III. KINETICS OF THE REACTION OF AZOLIDONES-4 WITH BENZALDEHYDE

Abstract

UV spectroscopy is used to study the kinetics of formation of 5-benzylideneazolidones-4. The reaction is shown to be irreversible and follows a second-order equation. The effect of various hetero atoms (sulfur, nitrogen, and oxygen) in position 1 or 2 on the methylene group reactivity of azolidones-4 is investigated. The azolidones-4 fall into two series with respect to decreasing activity of the group in acetic acid in the presence of anhydrous sodium acetate: rhodanine>2-thiohydantoin>pseudo-thiohydantoin>glycocyamidine> thiazolidinedione-2,4>2-thionoxazolidone-4>hydantoin>pseudo-hydantoin>oxazolidinedione-2,4.

Authors: S. N. Baranov, I. D. Komaritsa.

English Translation in Chemistry of Heterocyclic Compounds, 1965, 1 (1), pp 46-48

http://link.springer.com/article/10.1007/BF01168918