Chemistry of Heterocyclic Compounds

, Volume 3, Issue 2, pp 524–527 | Cite as

Investigation of methylene group hydrogen atom reactivity in some azolidines

IV. Kinetics of the condensation of rhodanine with aromatic aldehydes
  • S. N. Baranov
  • I. D. Komaritsa


UV specttoscopy is used to investigate the kinetics of formation of arylidenerhodanines from rhodanine and various aromatic aldehydes whose benzene ring substitutents differ in nature and position. Hammett's equation is used to determine quantitatively the reactivities of the substituted aldehydes. The order of effect of substituent on reaction velocity is p-NO2 > p-Cl > H > p-N(CH3)2, corresponding to a positive value of ρ in the Hammett equation. The position sequence is p-NO2 > m-NO2 > o-NO2, and for chloro derivatives m-Cl > p-Cl, in agreement with views on transmission of inductive and conjugation effects through a benzene ring to a reaction center.


Benzaldehyde Aromatic Aldehyde Pteridine Rhodanine Ethyl Benzoate 
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Copyright information

© The Faraday Press, Inc. 1969

Authors and Affiliations

  • S. N. Baranov
    • 1
  • I. D. Komaritsa
    • 1
  1. 1.L'vov Medical InstituteUSSR

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