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Question: Answered & Verified by Expert
In Clemmensen's reduction, the catalyst used is
ChemistryHydrocarbonsMHT CETMHT CET 2010
Options:
  • A $\mathrm{Zn}-\mathrm{Hg}+$ Conc $\mathrm{HCl}$
  • B $\mathrm{NH}_{2} \mathrm{NH}_{2}+\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{ONa}$
  • C $\mathrm{PdCl}_{2} / \mathrm{H}_{2} \mathrm{O}$
  • D $\left(\mathrm{C}_{6} \mathrm{H}_{5}\right)_{3} \mathrm{P}+\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{ONa}$
Solution:
2248 Upvotes Verified Answer
The correct answer is: $\mathrm{Zn}-\mathrm{Hg}+$ Conc $\mathrm{HCl}$
Zinc amalgam $(\mathrm{Zn}-\mathrm{Hg})$ and conc $\mathrm{HCl}$ is used as a catalyst for Clemmensen's reduction. This reagent converts $\sum \mathrm{C}=\mathrm{O}$ group to
$>\mathrm{CH}_{2}$
group.

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