alleryClemmensen 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.
Keep practising Aldehydes, Ketones and Carboxylic Acids
Browse all Aldehydes, Ketones and Carboxylic Acids questions for AP Intermediate 2nd Year, or explore more Chemistry topics.
Related questions
The IUPAC name of the simplest aldehyde, $\mathrm{HCHO}$, isMatch each named organic reaction to its description.Match each named organic reaction to its description.Which one does NOT belong?Match each carbonyl testTollens' reagent gives a silver mirror with:The reaction of formaldehyde with concentrated NaOH is calledThe carbonyl carbon in an aldehyde or ketone is