E—Z-Izomerization of 2-methylenethiazolidin-4-ones

YY Morzherin, MF Kosterina, VS Berseneva…

Index: Morzherin; Kosterina; Berseneva; Dehaen; Bakulev Russian Chemical Bulletin, 2002 , vol. 51, # 7 p. 1292 - 1297

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Citation Number: 2

Abstract

Abstract The equilibrium concentrations of E-and Z-isomers of thiazolidin-4-ones containing exocyclic double bonds in positions 2 and 5 of the cycle were determined in DMSO-d 6. The influence of the nature of the substituents on the equilibrium position was found. Electron- releasing substituents stabilize the E, Z-configuration and electron-withdrawing substituents stabilize the Z, Z-configuration. The association constants of E-and Z-2- ...