JEE Main Chemistry question

Methyl ethyl ketone can be reduced to n-butane by

(A)The Meerwein–Ponndorff reduction
(B)The Wolff–Kishner reductionCorrect
(C)Mg–Hg, H₂O
(D)All of the above

Answer: (B)

Solution

Full deoxygenation of a ketone's C=O all the way to CH₂ (giving the parent hydrocarbon, n-butane, from methyl ethyl ketone) requires a dedicated carbonyl-to-methylene reduction such as the Wolff–Kishner reduction (NH₂NH₂/KOH, heat) or the Clemmensen reduction (Zn–Hg/conc. HCl). The Meerwein–Ponndorff reduction is only

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Question ID VK-149350