Abstract – Publication

Multiple reversible dynamics of pyrimidine based acylhydrazones.
ARANGO, Alejandra M.; WIST, Julien; ELLENA, Javier; D'VRIES, Richard F.; CHAUR, Manuel N.
Abstract: We employed (Z )-N'-[phenyl(pyrimidin-2-yl)methylene]nicotinohydrazide (2 ) and (Z )-4-(dimethylamino)-N' -[phenyl(pyrimidin-2-yl)methylene]benzohydrazide (3 ) as cores of dynamic chemical systems whose different states are modulated, in a reversible fashion, through specific physical and chemical stimuli. The structure of the compounds was determined by Nuclear Magnetic Resonance (NMR) techniques (1D and 2D) and confirmed by single-crystal X-ray diffraction. By Variable temperature (VT) 1H NMR experiments and DFT calculations, the conformational isomerism of 2 was studied and added as an additional input for the dynamic system. Additionally, 2 exhibits configurational E/Z isomerization mediated by pH variations and UV light. On the other hand, configurational isomerism locks an unlocks a tridentate pocket for metal cation coordination in both 2 and 3 . All the different dynamic states configurational/conformational isomerism and locked and unlocked coordination constitute a development in the field of systems of multiple dynamics suitable for molecular machines.
European Journal of Organic Chemistry
v. 2020, n. 26, p. 4009-4017 - Ano: 2020
Fator de Impacto: 2,889
    @article={003000497,author = {ARANGO, Alejandra M.; WIST, Julien; ELLENA, Javier; D'VRIES, Richard F.; CHAUR, Manuel N.},title={Multiple reversible dynamics of pyrimidine based acylhydrazones},journal={European Journal of Organic Chemistry},note={v. 2020, n. 26, p. 4009-4017},year={2020}}

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