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Tautomerism

The total num...

Question

The total number of enolizable C atoms is :

A

8

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B

6

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C

4

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D

5

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Solution

The correct option is C 4

For a compound to exhibit tautomerism, presence of $α$ -hydrogen is neccessary at its $s p^{3}$ hybridised ⍺-C atom.
All the circled 'H' atom are $α$ to carbonyl group thus they will exhibit keto-enol tautomerism.
Hence, total number of enolizable C atoms=4.

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