MHT CET202527 Apr 2025Evening ShiftChemistryHydrocarbonsActual
Which of the following reactions represents Wolf-Kishner reduction?
Options
- ARCOCl [ Pd - BaSO ₄] H ₂ RCHO + HCl
- BR CN [ H ₃ O ⁺] SnCl ₂, HCl R CHO + NH ₄ Cl
- CRCHO [ ] Zn - Hg ,conc HCl RCH ₃+ H ₂ O
- DRCOR [ ii) KOH , HO ( CH ₂ )₂ OH ] i) H ₂ ~N - NH ₂ RCH ₂ R
Correct answer
A. RCOCl [ Pd - BaSO ₄] H ₂ RCHO + HCl
Step-by-step solution
The Wolf-Kishner reduction converts carbonyl compounds to methylene groups using hydrazine and strong base under heating. Option A, RCOCl [ Pd - BaSO ₄] H ₂ RCHO + HCl , is the Rosenmund reduction. Option B, RCN [ H ₃ O ⁺] SnCl ₂, HCl RCHO + NH ₄ Cl , represents the Stephen reduction. Option C, RCHO [ ] Zn - Hg , conc HCl RCH ₃+ H ₂ O , shows the Clemmensen reduction. Option D, RCOR [ ii) KOH , HO ( CH ₂)₂ OH ] i) H ₂ N - NH ₂ RCH ₂ R , exhibits the characteristic reagents of the Wolf-Kishner reduction: hydrazine f