| Autor: |
Morzherin, Yu., Kosterina, M., Berseneva, V., Dehaen, W., Bakulev, V. |
| Zdroj: |
Russian Chemical Bulletin; Jul2002, Vol. 51 Issue 7, p1292-1297, 6p |
| Abstrakt: |
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-d6. 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-ethoxycarbonylmethylenethiazolidin-4-ones with the sodium cation were determined by 1H NMR spectroscopy. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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