Interconversion Around a Partial Double Bond Restricted Rotation

2 Interconversion Around a Partial Double Bond (Restricted Rotation) At room temperature, a neat sample of dimethylformamide shows two CH3 peaks because the rate of rotation around the hindered partial double bond is slow. At 

FIGURE 4.39. Acetylacetone in CDC13 at 300 MHz and 32°C. The enol-keto ratio was measured by integration of the CH3 peaks. 

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