Aminonitrone-N-hydroxyaminoimine tautomeric equilibrium in the series of 1-hydroxy-2-imidazolines
摘要:
A series of 2-substituted 1-hydroxy-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazoles have been synthesized. Various effects on the state of the aminonitrone-N-hydroxyaminoimine tautomeric equilibrium, including solvent effects and substituent effect in the 2 position of heterocycle, have been studied. (C) 2004 Elsevier B.V. All rights reserved.
The model of 1,3-dipolar cycloaddition reaction of 4,5-dihydro-1H-imidazole 3-oxide derivatives with alkynes
作者:Sergey A. Popov、Galina V. Romanenko、Vladimir A. Reznikov
DOI:10.1016/j.molstruc.2007.02.015
日期:2008.1
solvents and different structural factors on the rate of 1,3-dipolarcycloadditionreaction of the 4,5-dihydro-1 H -imidazole 3-oxide derivatives with alkynes have been studied. Nitrones and alkynes have been ranged by their relative activity in this reaction. Using the DFT calculation with the triple zets basis set, the energy profile of the reaction has been plotted, and the structures and energy characteristics