1H andd 13C NMR Spectra of (Z)-C-Aryl N-tert-Butyl Nitrones
The 1H an 13C NMR spectra of 12 (Z)-C-aryl N-tert-butyl nitrones were measured and proton and carbon assignments made.The nitrones were synthesized by the dimethyldioxirane method.
INFLUENCE OF LAMELLAR LIQUID CRYSTALLINE MEDIA IN THE HYDROLYSIS OF 4-SUBSTITUTED BENZYLIDENE t-BUTYLAMINE N-OXIDES.
Cationic lamellar liquid crystalline morphologies decrease the rate of hydrolysis of a series of 4-substituted benzylidene t-butylamine N-oxides compared to aqueous solutions. Rate constants for the aqueous acid hydrolysis decrease as the electron releasing effect increases and they are linear when plotted against sigma ** plus -substitutent constants. Rho-values indicate a less sensitive reactivity series than the benzoic acids and a more sensitive reactivity in lamellar solvents. Reaction rates for the series in the latter solvent parallel the hydrophobic substituent constants. Three different lamellar morphologies were identified in the aqueous surfactant systems.
Bacon,Neubert,Wildman,Ott
p. 307 - 321
(2007/10/02)
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