Influence of different of ethanol percentages on the acidity of Aza Michael compounds
Keywords:Aza Michael compounds, Dielectric constant, Acidity. pKa values
The research focused on the preparation of ten chemical compounds of the new Aza Michael compounds using one of the methods of preparing important organic compounds. The prepared compounds were diagnosed and their structural bodies were confirmed using infrared spectrum, ultraviolet visible spectrum, melting points and color. The main objective of this research is to study the effect of five percentages of ethanol alcohol in the confined range (60-100%)in the alcohol-water mixture on the acidity of the ten Aza Michael compounds by using the simple, fast and accurate potentiometric titration method. The study confirmed that the five mentioned ratios have a clear effect on the values of pKa ionization constants obtained for the prepared compounds. Drawing a relationship between pKa against the dielectric constant (D) of an alcohol-aqueous medium, showed five different solutions, which are discussed appropriately.
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