MCQ
Which of the following has most acidic hydrogen?
  • A
    $2, 3 -$Hexanedione
  • B
    $2, 5-$Hexanedione
  • $2, 4 -$Hexanedione
  • D
    $3 -$Hexanone

Answer

Correct option: C.
$2, 4 -$Hexanedione
$ 2,4-$hexanedione will have active methylene group.
The structure of $2,4-$hexanedione is

Image
$-CH_2$ group present between the two carbonyl group is active methylene group, these hydrogens are highly acidic as their conjugate base is highly stable.

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