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Question: Answered & Verified by Expert
Clemmensen reduction of a ketone is carried out in the presence of which of the following?
ChemistryAldehydes and KetonesJIPMERJIPMER 2014
Options:
  • A $\mathrm{Zn}-\mathrm{Hg}$ with HCl
  • B $\mathrm{LiAlH}_4$
  • C $\mathrm{H}_2$ and Pt as catalyst
  • D Glycol with KOH
Solution:
1238 Upvotes Verified Answer
The correct answer is: $\mathrm{Zn}-\mathrm{Hg}$ with HCl
The reducing agent used in Clemmensen reduction is $\mathrm{Zn}-\mathrm{Hg}$ and HCl . It converts $\gt\mathrm{C}=\mathrm{O}$ group into $-\mathrm{CH}_2$ group.
$\gt\mathrm{C}=\mathrm{O} \xrightarrow{\mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}}\gt\mathrm{CH}_2$

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