12+ Keto Enol Tautomerism Of Acetone Images. This reaction always produces a ketone, even with a terminal alkyne, the only exception being the hydration of acetylene, which produces acetaldehyde. Enols protonate at carbon for reasons similar to the reason that carboxylic amides protonate at oxygen rather than at nitrogen:
The enol and keto forms are said to be tautomers of each other. Organic chemistry would be of no value if not for multiple bonds and functional groups. And is several pka units less acidic than.
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This reaction always produces a ketone, even with a terminal alkyne, the only exception being the hydration of acetylene, which produces acetaldehyde. The interconversion of the two forms involves the movement of alpha hydrogen and the shifting of bonding electrons; Enols protonate at carbon for reasons similar to the reason that carboxylic amides protonate at oxygen rather than at nitrogen: Keto‑enol tautomerism was first introduced in section 9.4, in the discussion of the hydration of alkynes.
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