Part II. Analysis of Ketone-Enol Equilibrium of Dimedone Using 1 H NMR (Show calculations on spectra) Group members' nam
Posted: Wed May 18, 2022 11:41 am
Part II. Analysis of Ketone-Enol Equilibrium of Dimedone Using 1 H NMR (Show calculations on spectra) Group members' names (if you took NMR spectra as a group): Chemical shifts of peaks used to determine the enol and ketone content of the solution: Enol Ketone CDCI Acetone-do DMSO-do Integration of enol peak Integration of ketone peak % enol present in solution % ketone present in solution Keq for the ketone Y enol equilibrium Effect of solvent: Arrange the three NMR solvents in order of dielectric constant (highest first) 2. 3. How does the percentage of enol form vary with dielectric constant of these aprotic solvents? Explain why.
306 720 5.40 TE 25 223 74.13 206 1.15 1.00 0.24 5 0.19 12 10 PPM Dimedone Chloroform Processed
5314 B6CE 2588 2213 2085 1.00 - 1.021 14.78 7.39 1.70 100 12 10 PPM Olmedone Acetone Processed
5214 2.524 2.126 boot 5.81 3.3 1.00 12 10 2 PPM Dimedone OMSO Proceed
306 720 5.40 TE 25 223 74.13 206 1.15 1.00 0.24 5 0.19 12 10 PPM Dimedone Chloroform Processed
5314 B6CE 2588 2213 2085 1.00 - 1.021 14.78 7.39 1.70 100 12 10 PPM Olmedone Acetone Processed
5214 2.524 2.126 boot 5.81 3.3 1.00 12 10 2 PPM Dimedone OMSO Proceed