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Clemmensen reduction converts C=O to CH₂ using:
ANaOH
BH₂/Pt
CNaBH₄
DZn(Hg) + HCl (acid-stable substrates only)
Answer & Solution
Correct answer: D. Zn(Hg) + HCl (acid-stable substrates only)
Clemmensen: Zn amalgam in concentrated HCl reduces aldehyde/ketone to alkane (CH₂). For acid-sensitive substrates, use Wolff-Kishner: NH₂NH₂/KOH (base-stable). Both deoxygenate carbonyls.
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