Like many other carbonyl compounds, acetaldehyde tautomerizes to give the enol. The enol of acetaldehyde is vinyl alcohol (IUPAC name: ethenol):
- CH3CH=O CH2=CHOH
The equilibrium constant is only 6 x 10−7 at room temperature, so that the amount of the enol in a sample of acetaldehyde is very small.
Read more about this topic: Acetaldehyde
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