Keto–Enol Tautomerism ·
The α-Proton Shuffle
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.com · keto ⇌ enol · proton C→O · double bond migrates
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Keto
enol
~6 ppm
α C–H pKa
~20
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carbon
oxygen
hydrogen
migrating α-proton
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.com · Keto–Enol Tautomerism