Home › JEE Main › Chemistry › Aldehydes, Ketones and Carboxylic Acids › Clemmensen reduction converts C=O to CH₂ using:
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.
Related questions
Among acetic acid, chloroacetic acid, dichloroacetic acid, trichloroacetic acid, the stronCarboxylic acids are more acidic than alcohols because:Tollens' reagent gives a silver mirror with:Aldehydes are generally more reactive than ketones in nucleophilic addition because:Glycine has 2 amino acid forms in solution. Zwitterion:In Friedel-Crafts acylation, RCOCl + AlCl₃ + benzene gives:Esterification: RCOOH + R'OH + acid catalyst yields:For α,β-unsaturated ketones (enones), 1,4-addition (Michael) competes with 1,2-addition. S