This is concurrent with breakage of one of the C=C bonds; the electron pair is used to accept a proton. This is illustrated in Figure 5. Keto-enol tautomerism is an important process in sugar ...

The two isomeric forms transform into each other, creating a delicate equilibrium, a "tautomeric" mixture ... was applied to the prototypical keto-enol equilibrium of 3-hydroxypyridine in aqueous ...

Acetylacetone (2,4-pentanedione) is a β-diketone that occurs in the form of enol and tautomeric keto mixture. In basic solution, this organic compound is deprotonated to form the acac or ...