Tautomeric equilibrium

The proton transfer between interconversion tautomers is of importance in synthetic chemistry, such as: keto-enol, imine-enamine, oxime-nitroso [1, 2]…. The keto-enol tautomerization, especially in the -diketone compounds is a common one. Acetyl acetone, one of the -diketone compound, was studied experimentally early and thoroughly [1, 2]. This compound usually exists an equilibrium mixture of enol and keto tautomers with equilibrium

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