17-1 Keto-Enol Tautomerism Carbonyl compounds with a-hydrogens rapidly equilibrate with corresponding enol(ene alcohol) Interconversion known as keto-eno/tautomerism :Greek tauto,meaning"the same,”and meros,meaning“part” Individual isomers called tautomers Keto tautomer Enol tautomer Carbonyl compounds with a-hydrogens rapidly equilibrate with corresponding enol (ene + alcohol) ▪ Interconversion known as keto-enol tautomerism ▪ Greek tauto, meaning “the same,” and meros, meaning “part” ▪ Individual isomers called tautomers 17-1 Keto-Enol Tautomerism